I love how the photographer & cosplayer (it is a collaborative effort after all!) used the door way to frame the subject. The cinder blocks, with graffiti offer a slight distressed look when compared with the very polished, clean Plug Suit of the character.
Could I improve on this image? There are very few...tiny bit of subjective tweaks I would do that would "make the image my own": Maybe move to Camera Left to see what's in the distance. If it's a useable background, I would have use a background with a greater sense of "distance". Can't really improve this image, it's already pretty good!