That is nice work. I'm making a casual version of the same pattern of heavy black canvas I happened upon. I "interpretted" the pattern a bit and may have made some of the same changes you did. In canvas, it's a bit softer, although this fabric is quite stiff.

I need to find some sort of button and then add the lacing for it. I also have some dark rust color canvas of the same sort, I'm going to make another for young Scooby to go with his denim XKilt. Pics when they're done.

Bob