The girl's so pretty.

Just a few suggestions, even though I believe it belongs in intermediate:
Perhaps add more shading- I think very soft shading would work here. And since they're in the desert you could put some reflection of light, to prove that's it's very warm, etc.
Also, the lines seem a little bit bulky, perhaps you could make the edges a bit more thin, because at the neck and a few pieces of the bangs end very... abruptly? I don't know.