I like the way you did the depth, although I think the strands in front of the render might have been blurred too much...They look kind of just like brush strokes. Interesting theme though, and I'd try to occupy the top left corner with some text too, if not then with something at least
Love the way you added that c4d in Really helps with the depth although I know you can do better with the lighting on the c4d's
One of the only things that grabs my attention in a negative way is to the top left of her head theres something that looks sorta like a C4D but it's extremely oversharpened/contrasted.