The ball is way too bright on the Billups sig. The BG is way too plain, try brushing or add some stock images to it. The text is too bright aswell. As for the Bargnani one, it's pretty much the same. Text needs alot of work and again, the BG is way too plain and bright. One more thing, do you cut your own images? Try using PSD renders for now until you get the hang of cutting cause the edges look rough. I've seen better from you but props for trying different stuff.