I think the likeness is fantastic, especially for your third human sculpture! Congrats!! Regardless of the bad phone photos, I still think I'd add some more size to the back of his cranium. I could be wrong, though. You should post a profile pic, regardless.
I'm pretty sure that's from the first episode of season 4 when Data was jacked in to Locutus/Picard. I just watched it last night and that looks like the plug. So if you want to watch it light up there you go.
Unnatural how? In their pattern or the depth the light shows in the pics? I think you'd be right in blending at least the right side in better...the left (looking at it) in person is much softer. As for orientation I traced them off of a picture and tried placing them that way so I'm fairly happy but I'm always open to suggestions. I wish I didnt suck at photography, I managed to get a decent skin texture on the forehead.The only problem I have with it now is those brow lines...They look way too unnatural. If you tone them down a bit, it would help sell your overall design. Everything else is fantastic!