They say good art starts with a thumbnail and yours caught my attention right off the bat. The blending of the images/elements and making into a whole new one is excellent and convincing with the theme quite consistent all throughout the piece, very well done. It has a professional book cover design feel to it. I am not sure of your light sources however, if they are in front of the model, or just from the moon or anywhere else. Just keep that in mind in combining images that might have different lighting schemes. On a very light note, and this is already nitpicking, the shadow (or is it strands of hair?) on the right side of her face seems too dark and solid. All in all, Great job!