This is so lovely! The soft watercolour look really suits her. She looks wonderful! I can't really see any issue with her anatomy or proportions, other than maybe (her) right hand being a bit too small. Also maybe defining/darkening the lines of her eyes, but this isn't really an issue because you went for a frosty, icy look. however, the light lines blur the area, making it a little hard to really see.
But really, those minor things aren't imperative. This is really really beautiful! i love it