This is a marvelous picture! I really enjoy the pose and how dramatic it is. It really makes the costume stand out, and the background was chosen quite well. Not what I would have gone with, maybe, but it does work quite spectacularly. Great work. Something else to consider would be lighting and other visual effects. With a little contrast or some neat filters, this picture could become an extremely beautiful edit. Maybe a light shining down on you or something along those lines, but just a suggestion. I've used a couple edits in my time, and they make a huge impact on how people view your Cosplay. Good luck, keep up the good work!