Thanks for the feedback! Though I didn't take the photo myself. I do 100% agree with the background being empty and that there should be more blood where glass seems to be slicing her. I'll be sure to keep it all in mind if I revisit this.
My harsh critique: the blood looks a tad strange, but that adds to the undead glow, and the background is plain. In other words, this is just another "Oh my, this is stunning, and you did an EXCELLENT job at the glass" comment. DD well-deserved.