I also have been generally annoyed of boobs being the center of animations for female characters, which is why I chose to give her a black shirt. It leave it as ambiguous as possible.
I like that! I agree with harveydentmustdie, I think the arms could be a little longer when straightened as they look a little stubby atm. I also thing that giving some highlights on the arms would help her fit into the environment. Keep it coming