Looks pretty good to me. I have never built or shot a belly mount before, but intend to soon.
If I were you, I'd make the next one with one inch longer limbs, and 1/2"-3/4" longer wedges. Or possibly use an increased taper rate, making the limb butts thicker, and tips thinner. In the latter scenario, I would probly add tip wedges. I'd also move the limb bolts out as close to the riser ends as possible.