Double-post only because I have new info and pictures. First, the Ultra Ball:



This one was a PAIN to paint right. The yellow "H" top kept messing me up, and many times on the first one I had to paint back over accidental yellow painting. The second one I only messed up on a couple spots, so I should be able to get the future ones right without much problem.

And finally, here's all the Pokéballs that I have completed so far:



That's 5 Pokéballs, 2 Premier Balls, 2 Great Balls, and 2 Ultra Balls.