Cool shot. I really like it. If I were this cosplayer I'd be really happy with this. Something that draws my attention though is the cowlick in her hair. If it's a defining character detail, definitely keep it, but if not I would try editing that out. I also think some warmer skin tones would give her a healthier appearance, something similar to the skin tones in the before shot. She has a bit of a purple tinge to her skin in the after shot that makes her look a bit sickly to me.