I like the pose, but I agree with November, the hair looks a bit strange... the way her hair is parted along the top makes it look like her head extends to far back.

Maybe to seperate the back of the hair with the head put in a hairband or move the ribbon towards the point where the head stops to differentiate it. And don't be afraid to put in more shadows and highlights. Scary to do but it helps. I like it overall.