Here's the vest for my AD 303 Final, so far. it's just a muslin mock-up, so that I can test fit and see what I want to change. I was able to successfully make the funnel collar that I desired, using the pattern from [link]
It will have 12 buttons, marked by the circles on the front. Currently, this version has a half front under the center front, but provided I have enough fabric and piping, I'm going to make it a true double breast, so that I can unbutton the top two and fold out the collar.
If you look close you can see a fine line along all the edges, it's 1/2" from the raw edge and marks the seam allowance. The actual edge of the garment will be the fine line, not the edge of this fabric.
Changes I still want to have are to lengthen the apron and seat and make the apron thinner at the bottom. the rest is stellar, IMO
Any critique is greatly appreciated, as far as fit is concerned... particularly the CF at neck, where I get this bubble.