I feel terrible suggesting this especially when you have so much nailed down and looking great but what I loved about the old lady with the chimp eyes version was the weird blink during contemplating Luke's temptation.

It added a creepy suggestion of relish to his face.

The eyes are hidden in the shadow and distortion but might it be possible and possibly effective to get an something like that by adding a very brief interference spark suggestive of a gleam in his eye (not a real gleam but something caused by the hologram jitter that looks a bit like a glint of sinister anticipation, a bit like a pixel burn out on an old monitor)?

Just a thought.