Thank you for sharing the templates.
I am curious about the one for the armhole. Will you be giving an explanation for how you arrived at that shape?
Also, I like the adjustable collar pattern. It made a satisfying noise. Does it have a hinge or are there multiple folds?
-matt
You're welcome Matt!
The front scye is usually hollow due to the natural posture and movement direction of the arms while the back scye requires a straighter line for movement across the back.
If you draw a line from the back of the armpit over the shoulder to the front of the armpit, this is on average the shape that you would get.
Keep in mind that this is only a template. You can use the curves on this pattern to make armholes of all sizes and shapes.
The collar pattern has 2 hinges. I don't use it often anymore as I draft individual collar patterns for the jackets I work on.
Reza
International School of Tailoring