Some strange flairs on edges and some strange unsharpness at top, maybe some dirt on your lens. Good idea but maybe not very well performed technically. Think another angel and shallower DOF would have give a better results and maybe more corping excluding more of the hand.
As a poker player, I can relate to this picture all too well! What bothers me is the background - would have been better if there had been poker-related items, such as coins or chips. In fact, without anything in the background (or even black background) probably would work just as well. Nice, clear image overall!