A good start. A few things: Turn your lights so her face is in the light, not partial shadow. It'll also highlight the orb in her hand a little more and give the piece a bit of drama. I'm not sure what the large object is behind (in front of?) her (my POV) right wing. Is that something rising out of the orb? If so, you might do better to put it in in post work so you can play more with the object's transparency and luminosity.