I would like it a little better maybe if the 'flowers' wasn't so dark, maybe fade it in a little, also if the changes between photos wasn't so noticable, maybe layer them over each other with some transparency to it. If you can, I'd keep the top of the girl's head in the bottom left picture, and the bottom of her chin in the top left picture. Just a suggestion, but then, I don't really know how much of it you can change. The photos are really nice though.
