I was pretty amazed when I finished Sora. I didn't expect him to turn out as great as he did. Unfortunately I messed up on his hair a little bit and his shirt, otherwise it would have been one of the few perfect pieces I have drawn.
The mess up with his shirt was just that I colored it black instead of dark blue. I only realized it afterward when I was looking at game play. I myself haven't played II (and on that note I haven't played I all the way through either) and the reference picture I was using looked black to me so I just went with it.
The hair mess up is pretty petty, the only thing wrong with it is that I made some of his spikes larger and thicker than they are supposed to be. It doesn't bother me much, but a few places look kind of weird to me. I finished Riku a few days ago but he didn't turn out right. I think I was rushing him too much.