Mastering Modern Speed Tailoring
from $59.00 USD

Includes Jasika Blazer pattern in print or PDF

Are you curious about tailoring but don't know where to begin? Do you want to grow and expand your skillset and push your sewing practice to the next level? 

Welcome to the class designed to demystify the fine art of speed tailoring! Spoiler alert: it's not as hard as you think, and the skills and techniques you'll learn will truly level up your entire sewing practice. That high-end blazer you've always wanted is just a few hours away, only this time it's constructed and fit for your exact body, using professional, industry-level techniques and secrets. 

Learn to Sew a Classic Blazer is a comprehensive online class that guides you through the process of sourcing, stitching and finishing your own custom made blazer using modern speed tailoring techniques. No need for pad stitching or fiddly sew-in interfacings - you'll learn how to use fusible interfacings to quickly add structure and shape to a blazer that will fit like it was made for you (because it was!) 

By following along using the included Jasika Blazer pattern (although the skills and techniques can be applied to any blazer pattern), Heather Lou of Closet Core Patterns teaches each lesson in simple language everyone can understand, so both advanced and novice sewists alike will feel confident creating beautiful, custom-made blazers from the comfort of their own home.

Work at your own pace – anytime, anywhere, on any device – and learn the ins and outs of creating structure with readily available and easy to apply fusible interfacings, along with industry level speed tailoring techniques & skills you'll use forever.

In this class you'll learn...

  • Where to source beautiful tailoring fabrics, interfacings and all necessary supplies.
  • How to find the perfect size for your body, grade in-between sizes and make a test muslin.
  • Basic jacket fitting, with an in-depth downloadable ebook to help you identify and solve any potential fit issues.
  • Best methods for prepping, marking and cutting fabric and interfacings.
  • How to create structure and dimension in a tailored jacket using fusible interfacings you can apply at home with a regular iron.
  • Two different styles of welt pockets.
  • How to confidently sew a gorgeous notched collar that rolls beautifully at the lapel.
  • Classic hand-stitching techniques for a truly flawless finish.
  • How to sew and set-in a beautifully fitting two piece sleeve.
  • How to insert sleeveheads and shoulder pads for professional-looking results (including free patterns for both!)
  • Tips for adding painless and professional-looking details like buttonholes, buttons and topstitching.
  • Industry techniques like how to quickly bag a coat lining with a minimum of handstitching.
from $59.00 USD

About the pattern included with this class 

While you can use any pattern to follow along (including patterns for men, since the skills are the same), we have created an exclusive jacket pattern for you to use in this workshop, the Jasika Blazer. Featuring all the landmark details of a classic blazer, it has a timeless, semi-fitted silhouette with lots of opportunity for customization, and can easily go from casual to formal depending on fabric choice. 

Choose the format of your pattern; print patterns will be shipped directly to you, while an instant gratification PDF can be printed at home or a local copy shop. See our guide to printing and assembling PDF patterns here.

Learn how to sew class Learn how to sew class Learn how to sew class

Also included:

  • A comprehensive Blazer Fitting Ebook to help you diagnose dozens of common fitting issues, along with instructions on how to assess fit, how to make a muslin and a Blazer Fitting Checklist to print and use while fitting your jacket. 
  • Printable cutting list to help you keep track of pattern pieces. 
  • Detailed supply guide to help you source fabric and supplies. 
  • Free patterns for sleeveheads and shoulder pads.
  • Watch anywhere video lessons with closed captioning.
from $59.00 USD

Class Curriculum

  • Introduction (11:58)
  • Lesson One: Fabric & Supplies (27:26)
  • Lesson Two: Choosing a Size, Fitting & Making a Muslin (18:20)
  • Lesson Three: Fabric Cutting & Prep (26:01)
  • Lesson Four: Preparing the Front Jacket (39:05)
  • Lesson Five: Sewing Side Seams & Double Welt Pockets (33:59)
  • Lesson Six: Assembling Back & Body (21:21)
  • Lesson Seven: Assembling Collars & Lapel Facing (36:31)
  • Lesson Eight: Sewing & Pressing Lapel (35:17)
  • Lesson Nine: Sewing & Setting in Sleeves (25:50)
  • Lesson Ten: Inserting Shoulder Pads & Sleeveheads (10:14)
  • Lesson Eleven: Assembling Lining (10:27)
  • Lesson Twelve: Lining the Jacket (33:36)
  • Lesson Thirteen: Finishing Touches + Conclusion (26:18)

Class Benefits 

  • Learn anytime, on any device, with unlimited access.
  • All videos include closed captions.
  • Self-paced lessons mean you decide when the class begins and ends, and how many times you watch it over again.
  • Helpful tips, techniques, and methods for making your own blazer from an industry professional
  • Acquire sewing skills that are transferrable and can be built upon in future sewing projects.
  • Get additional help! You can always count on a response from Heather when you leave a comment or question in the lesson.

Meet Your Instructor 

Heather Lou is a pattern designer and sewing educator for the modern maker. As the force behind Closet Core Patterns, she has been writing about sewing for almost ten years, and has taught thousands of people to sew, both online and in her sold-out sewing workshops across North America & Europe. Her work has been featured in Threads, Sew News, Seamwork, Love Sewing and Sewing World magazine. 

With her contagiously positive attitude, Heather’s teaching style is fun and filled with helpful tips and techniques to help you transform the outfits in your imagination into a self-made wardrobe you love — not one you’re limited to buying off the rack.

Heather Lou of Closet Core Patterns
from $59.00 USD

"This class was amazing, I never would have attempted something like this before, but having Heather Lou talking me through every step made it possible. I cannot express how proud of myself I felt when I finished my blazer!" 


Frequently Asked Questions

Welcome to the class that changes everything about how you make a classic blazer! To get sewing, click on the button at the top or bottom of this page, choose your pattern format, and you'll be automatically enrolled in your class after checkout. The link to login to the class will be sent to you via email. Please check your spam folder if you don't receive it after finalizing your purchase.
The beauty of Closet Core Patterns’ online classes is that you call the shots on when they begin and end. Learn to Sew a Classic Blazer is a completely self-paced, online class, which means you get to decide when you start, when you finish, and how many times you replay it.
Before you get started, we’ll share a complete supply list, along with information about where and how to source everything on said list. At the very least, you’ll need a sewing machine, iron, tailor's ham, tailor's clapper or point presser, pinking shears and regular shears, marking tool, tailoring fabric and interfacing.
It’s up to you! To give you an idea of how long the class is start to finish, the video runs just over 4 hours long and comprises 13 lessons total. Binge watch them in a weekend, or do a little at a time. You can return to the class as many times as you’d like, and there’s no time limit for you to complete in.
Please choose between a PDF pattern you can print at home, or a print pattern we'll ship directly to you. If you select the PDF format, you'll be able to download your patterns immediately after checkout, or by using the download link sent to you via email. Print patterns will be shipped in 5-10 days.
This class focuses on construction and technique, and while we use the Jasika Blazer to demonstrate on camera, you can follow along using absolutely any blazer pattern you prefer, including a men's pattern.
All day, ‘erryday. But for real, this class includes lifetime access. After you enroll, the class is yours, which means you’ve got unlimited access for as long as you like, across all devices for all of eternity.
from $59.00 USD

Customer Reviews

Based on 31 reviews
Great online course to sew the perfect blazer!

A superb online course that helped me sew my first blazer. And thanks to the amazing instructions, it turned out perfect enough to wear it to work! For anyone who wants to get started with sewing their own blazer, this course is a great step by step sew-along with lots of helpful tips and tricks along the way.

Adel Staple
Best sewing tutorial ever!

I never realised there are so many intricate parts to making a blazer! This course is PACKED with loads of information, tips and tricks - not only applicable to blazer-making but also sewing in general. I was amazed at the quality of the finished garment considering I am a beginner sewer - this is all thanks to the very detailed and easy to follow step-by-step approach. At no point did I feel overwhelmed or lost - I could simply pause, rewind, replay and follow at my own pace until I felt comfortable to take the next step in the process. I definitely recommend this course!

My first go at any kind of tailoring

Love love loved the experience making Jasika Blazer with the sewalong videos

Wonderful Classic Pattern

Really enjoyed making this. The pattern is so well drafted. The tailoring kit was convenient and easier than tracking down all the bits and pieces. I also bought the (“video”) class which was very detailed and had lots of excellent tips. I’ve since revisited the video to apply tops to other makes.

Irene Spanner
Learn to sew a classic blazer

This online tutorial was worth every cent i paid for it. Great video with lots of detail which helped me immensely when i was constructing the blazer. I will definitely buy another online tutorial.

Louise fabian
My proudest make!

I can honestly say that this is my proudest make to date! I've been sewing since I was a about 8 so that's quite a statement.I have done some tailoring before - welt pockets and the like but this was the first time I have made a blazer using wool. The wool I chose was quite thick and that itself caused me to panic but I loved the way Heather Lou reassured me about fabric choice. This course is like sewing along with a friend. She guides you through every stage and you can submit questions and comments along the way. Her attention to detail is fantastic and I think that the tips really helped me sew with great care and precision. All of this equals a great product. Thanks to all involved in creating this resource. I would highly recommend it anyone who is interested in upping their sewing game.