I love the level of detail you used while still keeping it "rough", kinda ... "alive". Sorry I don't know how to express it any better. My fave is probably the USB plug. Overall I am a huge fan of the robots backhead. It's obvious they are mechanical parts, but they could as well be organic if you squint at them for a second or two. The perspective works really really well. I'd almost like to peek around the robot to see what the face looks like. The background is spectacularly interesting without taking attention away from the girl and the robot, nice job on that! My only two little complaints are the head of the girl which seems a bit huge and like Cairos said, the floor around her. While I didn't consider spare parts when I first saw it, he is of course right about it. My initial thought however was some sort of scattered cords leading from the keyboards and so on to the robot. I know it is there, but it's too thin, orderly and not very prominent.
Nevertheless, I think you came up with a cool concept and did a splendid job drawing it. The title is a good addition too.
Great work!