lol derp

First off, let me just say that it looks adorable.

The hair is very smooth with clean lines and shading. The outline of white against the blue background was a nice choice for contrast.

The only real suggestions I'd make are for the clothing. The overall shape of the shirt is good, as is the placing of the shadows -- except perhaps one small one near the collarbone on the right side. (The side where the hand is not.) I think, perhaps, that if you had had a strand of hair falling down in front, this would work, however, it seems a bit unnatural without.

Other then that, the whole effect of the image is rather sweet and bold to me. Very nice work!