The knee is my favorite part, and I don't even know. xD

You're definitely right about the clothes. I'm going to pay more attention to that in the future. I personally thought the hair looked to busy when I added the extra step of highlights to it though, so I left it out of this one.

There should be some more contrast in the clothes. With dark outlines like that, you'll want to use more AA too. The hair could use some highlights.

I like the pose though, it's more dynamic than most. I really like her knee as well for some odd reason.

Care, there are few pixels between the short arm and hands that you should remove, but the rest is very well.