I'm no expert on what you did but it looks great. The only thing that seems odd to me, is her right cheek, which doesn't seem symetrical with her left. Maybe it was the picture itself. Otherwise, very nice work, especially the hair and skin tones.
I absolutely love your work! Your photography, CG, everything!
I spose I can't critic much though, as I'm not really a good artist of any sort but I can praise on your fantastic talent. I'm so envious of you, hehe. I've downloaded your tutorials as well, you make it look so simple, yet it's so hard. I'm a complete beginner in digital art but you inspire me to want to learn
I'm glad I inspire you, digital art really isn't all that hard once you've got the hang of it, personally I find it easier than traditional since there's so much you can do that you just cant do in real work... Plus it has an undo tool ^_^