It looks like a plaid vest now

Today I laid out the pieces, cut them out, and after a nap put the various plaid wool pieces together into something that now strongly resembles a vest:

Looks like I got lucky in the front with the vertical "mirror" image even plaid matching up!  The princess seams won't as impressive, as the wool shifted slightly while sewing ... plus there's that whole curve idea ... which I also did on the waist.

Now comes the fun part: pinning the lining to the plaid wool along all but the side seams.  This may take a while, but I did break out extra pins for the occasion.