Besides proportion, positioning seems off in places.
Doesn't look like she has a contorted stance. Her left knee/lower leg makes it look like her knee is pointed inwards. btw, the left heel should stick out more (because of the heel bone). Her behind should be rounded off more near the bottom, otherwise it looks like an athletic woman with a sagging ass.

Really though, all that critique is simply directed at this: http://colddegree.deviantart.com/gallery/#/d3zp1xg

Besides that, her mask looks too one-toned and blurry compared to the rest of the suit.
The human form is difficult, but you made a good effort.