Mike, I think you did a great job overall. As an old art director, I will agree that you cropped a little too much off the bottom. It will be less distracting if you leave the hands completely in, or take them completely out. Of course, the hands are very much a part of the energy and personality he conveys in this pose, so I don't think you should lose them. If you made an intermediate copy, prior to cropping, I recommend you go back and crop just below his lowest hand. Then crop some of the top off--maybe about halfway between the current margin and the top of his head. Try that and see how you like it. Good luck with it!
Patrick