I really like the idea of this skin, though there are some things I didn't like so much about it. First of all, the second layer of head is really intended for fringe and additional things sticking out of the head, as opposed to the head itself. You'll notice the human part of the head look bobble head sized, and seems really unbalanced. Plus, there wasn't much to make looking into the head appear reflectively android, as part of the skin graft being blasted away would. My immediate suggestion would be to make it so that the eye and it's directly surrounding area were colored properly, but the area outside of that, were the android coloration. Alternatively, you could make the larger part only a segment, to expose, Oh, hey, this is a robot, depended on how you wanted to play that out, or your comfort level.

Beyond that, I would suggest ditching the blue hair. Without trying to force you into a box, the blue hair looks jarring for the skull of something supposedly masquerading as a human. I would suggest the fully metallic head, vis-a-vis Terminator. Lastly, while the exposed circuitry is fine, I would make a selection between glowing red or glowing green, ala the eye vs exposed wiring. It makes for a level of inconsistency. Unless those aren't the glow, that's supposed to be the wires themselves, in which case I might suggest a copper color nearby each of the wires to show the damaged circuitry.

As a spot of interest, on such a light shirt, some red or red/brown couldn't hurt. Transmission fluid is almost that candied cherry color.