Answer I'm guessing the biggest problem with this would be that a fist isn't spherical, but Toris head is. The main catch I can see is that for it actually look like a fist it would have to be a wholly separate 3D object, the closest I think you can get with the head texture is having each "side" of the head look like a different part of the fist, but you would still be left with a near perfectly round fist and it may look weird. My advise is either A: save yourself the trouble and come up with a new design or B: pay an experienced texture maker and be happy with whatever they get you. Amazing things can be done with textures, especially in more complex game engines, but I think you may be reaching a little high on this one.