The proportions of their bodies feels a tad Teletubbie-like, but than they were similarly made in the movie itself, so I suppose I shouldn't complain.

I like the scene and coloring on the snow, though I have a nagging feeling you could've done a better job with their hands - by comparison to the rest, they seem somewhat pasted, especially Elsa's right one, which gives the impression of being paler than the rest of her skin. Might be just my imagination though.

Still - good job.