The vest is done, and turned out very nice! Although I have to admit, were it not for my rubber nosed pliers, I could never have gotten a needle through that heavy denim.
I did not try free sewing on this project. Just didn't feel comfortable with it, and after playing around on small sample pieces, it became obvious that this was going to be a learning experience. So, all the stitching on the vest I did by hand.
The bones are outlined in black thread, as are the butterflies. I put Fray Check around the edges of the butterflies, even though they were ironed on with Heat and Bond. The fabric was thin, and was going to fray pretty easily. Also, I put Fray Check at the ends of the braid trim to keep it from unraveling. The trim and buttons came from my stash.
I have worn the vest once, and the only feature that bugs me is the collar. It rubs on my neck, so I may end up cutting it off.