More to explore:
Matching Notches: Copying A Favorite Garment
How to make a pattern from your favorite garment.
How to Copy Your Favorite Tee - Threads
How to put a garment together. You should click this if you love sewing!
Copying complex garments ~ Even if your garment has lots of shaping and unusual pieces, making a pattern from it is straightforward—and doesn't require taking the garment apart.
Copying Complex Garments
The 1940s original jacket - thread on how to copy complex garments. This looks helpful
An easy way to copy your favourite clothes/ copy patterns from existing garments
Patternmaking - Copy a favorite blouse
how to copy industrial sewing methods-Copying processes #5 This entire series is interesting. Also check out her tutorials here: www.fashion-incub...
Cuff. You could extend the concept to make a matching collar.
Princess side panel - angled rather than rounded. Point should end at bust apex like traditional bust dart
How to: COPY a DRESS or KNOCK-OFF a PATTERN