This looks great so far. Your ability to draw mechanical is fantastic. I'm not sure if it's a complete robot or a cyborg, I'm guessing cyborg because it looks like there are breasts. Maybe you should play with having a few more "human" features and show some more skin to drive that point home. The left wing in the frontal pose looks a little too bent at the tip, unless that's intended, but it doesn't look exactly symmetrical with the closer wing. These are nitpics, the piece so far looks awesome.
