I'm a little unsure as to why you flipped it rather than shooting the right way the first time. I like the lighting and the grimy feel here though the girl's pose appears somewhat forced. 7.
I despise being one of those people but, I just don't think you have managed to acquire ANY negative space at all. Your pix is filled with one subject "Woman in Steel Thingy"? I hope you understand what I'm trying to convey. Good Luck in challenge.