My first ever paintover, so hopefully it will actually be helpful ^_^:

there are a lot of changes, just to give some ideas (I like some of the things the way you did it better ^_^), and I didn't really spend time on making the shading consistent.
Major changes:
1) slimmed down face, brought down eyes, lengthened neck (one pixel)
2) a general slimming down of the body, arms, and legs
3) flipped legs, so hand is is on weight-bearing hip
4) lengthened legs slightly (2 pixels), and made them a bit more curvy
5) notice the difference in the shading of her breasts.Ã, Putting shading only below them makes them look saggy (IMO), and shirts tend not to hug each breast individually.Ã, Putting the stretch and the shadow from the peak (like in the paintover) helps make her look slightly more realistic, while still remaining busty.Ã, Why am I spending so much time explaining the boobs?Ã, I think it's a common tendency to put the shadows only below, and I don't think breasts really look that way.Ã, A "naughty nurse" should have well-rendered boobs, right? ^_^
6) trimmed down shoulder span
7) raised breasts by one pixel
I hope this helps you ^_^

there are a lot of changes, just to give some ideas (I like some of the things the way you did it better ^_^), and I didn't really spend time on making the shading consistent.
Major changes:
1) slimmed down face, brought down eyes, lengthened neck (one pixel)
2) a general slimming down of the body, arms, and legs
3) flipped legs, so hand is is on weight-bearing hip
4) lengthened legs slightly (2 pixels), and made them a bit more curvy
5) notice the difference in the shading of her breasts.Ã, Putting shading only below them makes them look saggy (IMO), and shirts tend not to hug each breast individually.Ã, Putting the stretch and the shadow from the peak (like in the paintover) helps make her look slightly more realistic, while still remaining busty.Ã, Why am I spending so much time explaining the boobs?Ã, I think it's a common tendency to put the shadows only below, and I don't think breasts really look that way.Ã, A "naughty nurse" should have well-rendered boobs, right? ^_^
6) trimmed down shoulder span
7) raised breasts by one pixel
I hope this helps you ^_^