Looks nice Mike, I like how you solved the problem of it always wanting to fall over. I never thought to add another base for the ones I made, I used a separate piece of wood for the bottom piece of the puzzle. It was wider and cut in the shape of the bottom piece of the puzzle, then I had to taper the sides to fit the 3/4" thickness of the rest of the puzzle. I cut the hummer out of 3/8" mahogany and pine for the belly, just for contrast.
Len