Ohhh, those are cute, I like them (: I think you should line your sketches with a fineliner or pen or something.. you know, make them look a little bolder and make the things on them easier to see.
You're great at bodily structure, I've noticed that - much better than I will ever be. One area that could use improvement is the hands - but don't take offense.. Hands are really hard to draw! I've practiced them for ages and I still don't make them turn out the way I want to.
Very pretty pictures. Nice nice nice. -thumbs up-