I think one of the many overlooked parts of an anime-like drawing are the eyes. I've seen too many characters' eyes just copy-pasted (not exactly, but you get what I mean) onto their head. Doing that way doesn't make the image horrible, but certainly makes it more bland.
Here, with this picture however, I think you perfectly captured Madoka's emotions in her eyes. That kind of sets it apart; sets it on a higher level than those other images that I've seen.