Neat-o! That’s a pretty crazy arm. Maybe you could add some cracks on the wall where it comes out?
A few somewhat little things (I’m not trying to scare you or make you think your work is bad, I’m just trying to give suggestions for improvement):
One, there doesn’t seem to be any light coming out of the lamps by the door anymore. Some spotlights or something might be nice in them.
Two, the surface and the base of the table aren’t nearly smooth enough. I can see the individual vertices of them, especially on the shadow. Give them more vertices so it’s smoother and it would look much better, I think.
Three, the doorknob seems to be just attached to the door. If it’s meant to turn (like most doorknobs), it needs to be attached to some sort of metal panel or whatever.
Four, the door doesn’t have any hinges, which I suppose is okay, but I just think it’s odd because all of my doors open towards the rooms rather than towards the outside and thus the hinges are visible from the inside.
The scene and overall mood look great so far, though, and it has definitely come along well!
Edit: Didn’t see the update when I posted. So about the lighting, I preferred how the room had dark corners in first (darker) one, but the details are easier to make out in the second (brighter) one. But also, the mood isn’t as dark in the second one. And I also just realized that the part of the curtain that’s attached to the pole looks a bit odd. It’s visible on part of it, but then not visible on the rest. Is it interesecting the pole or something?