why have you modeled her in high heels? It's just that that seems to be giving you some real problems in her legs which seem to be leaning back unnaturally and her feet, which look stretched and too thin. Obviously high heels completely alter your posture and the angle of your chest and limbs - I think if you want to keep the character in heels you should work out how they affect the body. Also, I'm not sure about having the hands bent back so far - it looks a little awkward to me.

Hope I haven't been too harsh!