Constructive critisism? Here we are.
The hands are too small; work on your hands.
The face it too long and the ears are too high. If you want long faces though(if it's part of your 'style') work on placing your ears a bit lower.
She's a girl, so she needs hips. Actually, just give everyone hips. It makes them look less like a stick. Girls just need more hips, like more of an hour-glass kind of shape.
Like. Uh... This is a good example:

This drawing, you maybe wouldn't otherwise be able to tell it was a girl, but the hips give it away. Girls have slimmer shoulders and bigger hips, like I said, hourglass-y shape.

And this would be a boy, because of the lack of a definition of hips, and broader shoulders.
See what I'm saying? Cool.
Other than that, I'm officially amazed at how well you can do legs and shoes. For some awkward reason I could never quite get shoes to look nice.
edit: sorry for the large animated-ness, I didn't have any of my other s**t on-hand.