This is a character I call Trinity, though I'm not sure what her true name is. She is a background character in the "Monster High" Webisodes. She was originally a Lagoona Blue doll. I re-rooted her using saran hair purchased from dollyhair.com and completely repainted her face with acrylics.
Maybe one day you could post a tutorial? I'd love to learn from someone as good as you! <3