I'm not going to offer any constructive criticism on this because I have none. Just simply:
Wow. Creepy. I want to stop looking at it, but can't. Just enough there to keep me interested and trying to figure out what's going on without every finding out.
The dark hand/body/head mismatch, the fact the robe/shirt/whatever appears to be a face, the crinkle in the bottom of the wall where it should be legs...
If creepy was your intention, you've succeeded, and, IMHO, delightfully so.
And thanks, cuz I'm not going to be sleeping well tonight!