hmm

When he said "the shading on the left foot" he probably meant it was just off proportionally. I can see his point being the left is forward(at least in the kneecap) and somehow has less light shading but really it's the shape of the leg. A simple solution would be just to change the angle of the foot- I'd probably try to go for having the toes in line with the other foot with her heel off the ground to make her right leg the one she's balancing on.

Other than that, FrostDrive p. much said everything I was about to say.

I gotta say...

Her upper arm is too long. and the exaggerated lump for her elbow isn't too appealing. The shading on her left foot also makes it seem like the side of her foot is on the ground. Kinda odd.

The colors are nice though, I'm liking that. :D