I absolutely love this. She's beautiful, for one thing, and I love her light complexion and overall colouring. The butterflies are cool, and the crown is a nice touch. It displays so many emotions to me, and is simply lovely. Amazing job; well done!
I like the subtle shading and the anatomy, and the highlights are perfect for the style. I do wish the hair was just a little darker though, and that there was more contrast in the shadows; some parts seem to have poor contrast. Though if this is the effect you were looking for, that's fine. The makeup is also a nice effect. For the butterflies, I think the highlights could have been a little more consistent.
But anyway, as a whole this picture is quite nice and I love all the detail you put into it. Keep improving, and critique a few random deviants when you have the time.