First of all, excellent job on the digits (fingers, toes) just hands and feet in general. They are a well known difficulty for artists and you executed them here extremely well.
A couple critiques. I'd suggest tapering the thigh and leg more. Where the upper and lower leg meet should be more well defined, it is often not that thick. It would also help to shade where muscles tend to pop out, showing where skin overlaps of folds over (like where the calf is bent against the thigh or at her abdomen since she is hunched over). There is not much identification of muscles throughout the body and it gives it a flat/amorphous effect. Lastly, her shoulder seems a bit too high. In the position she's in the shoulder would be more rolled forward, the right clavicle a little lower, and the curve of her right scapula visible.
Still a very well proportioned body and the details are especially well done. Her face is also a huge strength. It is a very evocative piece. I especially love the use of abstract shapes. Well done!