I hope not everybody lost interest in this great thread?
I won't do paintovers because I simply don't think I know enough to do that. But I'll try to give some crits!
@ Irina; to me it looks like you're not using enough shading in this. I think the snow could have much more grey darker tones in it, and the skin of the girl needs some warm shadows. The boots too. Currently the background is turning out quite flat because of the little differences in colour and value I think. Try making the front a bit darker, and leave the stuff that's far away light, and make it a bit more blue ish. I think that should help with the depth.
Oh and about anatomy issues, one I could find was that the left lower leg seems too long, just look at the angle of the line though the two knees, and the angle of the line through the two feet, her left foot should me moved upwards a bit, making the lower left leg less long.
@ sepulverture; ah I see you have enough crits but don't know how to apply them.. Sorry can't help with that I guess, since I'm really just not confident and skilled enough to do paintovers just yet.
I have a thing to paint over as well!
I need help with two, maybe three things:
The "wings" (how to make them look wingy? ), the colours of the face (how to make the face more interesting maybe, more contrast? Or is it allright the way it is?), and the background (which colour would bring this out best, and why?)
Oh, and here are the image, and the reference: