Very nice work! I'd have to agree with Seishi that
this is very nice, but in my humble oppinion I think cinderella blends in too much with the whole piece, which makes her not-so-quintessential...in a way. Also, because she blends in so much, it's hard to find the focus of the piece, which I assume is her. Perhaps if she were bigger or placed on the other side of the image so she would be noticed first, before the background?
I LOVE the concept of your siggy! That whole thing with her the flowy piece of clothing being where the blends take place, and only that, is so ingenious and out of the box, and
that, my dear, is avant garde. *claps*
This is my personal favorite because I love how well made it is, and that background is to die for! All in all, I think that cartoon blends are your forte, and really, that's not a skill many people have. I hope you make a tutorial on a banner or two someday!!