Before I begin, I'd like to say that your character designing skills are superb...all the outfits you come up with are so cute and fit the characters really well!

The first thing that I noticed was the length of her neck. I know it's hidden among the furry collar, but even so I think the neck should be a tad longer. Otherwise, it looks as if she's hunched or slouching, which is definitely something we wouldn't like! If you look at her right now, the top of her shoulders is almost on the same level as her cheeks, which is not where they line up! XD I suggest drawing a light triangle or something to approximate the distance between her face and shoulders, that may help; but don't make it too long either! : D

Another thing that looks a little odd is the length of her left leg (our right). Since it's bent a bit forward, the upper leg will have to appear shorter than the other upper leg in order for the perspective to look right. Foreshortening is tough, and I'm definitely speaking from experience haha. >_<; I'm not sure how you'd fix it though, heh...
Also, is the bottom half of the same leg bent backwards or sideways (or maybe both? XD)? You may want to experiment a bit with that more because at the moment it's not very clear which you're trying to depict.

Overall, it's just some minor anatomy and foreshortening issues, which is something we're all working on. Everything else looks fine to me! =]
(The staff is really nice. ;D)