I had to saw off the bottoms of all the vertebrae so that they would rest flat when I join them to the strip of bronze with silver tube rivets. I also spent some time shaping the main plate and I think I'm going to leave the two peripheral scapula plates flat.
I'm experimenting with scrimshaw on the bones, hence the pencil marks on the smallest vert. it's actually proving more difficult than I expected, so I may just not do it. either way, I'm still going to dye the bones with tea tomorrow before I rivet them onto the bronze.