Gah, didn’t see the other posts! 
Arctis,
Welcome to the thread! Thanks for posting.
I really like your line quality, and the drawing you’ve done is really nice! I think there’s something a bit funny in the face, which doesn’t feel as confidently drawn as the torso, which is really, really nice. The upper part of her cheek should curve in beneath her eye, and instead it’s doing something a little funny, with the nose being a bit misplaced. I would also say to study the ankle area of her right leg a bit more ~ right now her foot looks a bit stuck on, which takes away from the really great naturalistic thing you’ve got going on with the torso and upper leg. Great job so far ~ planning to paint? 
allenatl,
Really beautiful start to this piece!
No real crits so far, I look forward to seeing where this goes… 
tuzz,
Great to see you here! Welcome to the thread.
I think you have a nice start here. The main thing that I notice is that her lower right leg is too thick ~ double check these proportions against the photograph. One trick to try is to rotate both your image and the photo reference 90 degrees clockwise ~ this can sometimes help you to see mistakes (and correct angles) more clearly. It was much easier for me to paint the face this way than lying on it’s side.
Her arms are also a bit thick, so I would slim those a bit.
One trick to try is to either fill her in with the same color blue as your outline, or fill in the bkgrd with that blue, leaving the figure white. This will help you to see where the proper angles are, etc, and then you can just easily switch back and forth between blue and white (or whichever colors you prefer) to rough in her form. This is a particularly effective technique for seeing the positive and negative shapes in a really foreshortened pose such as this.
Good luck with this, and post your results! 
~Rebeccak