ek-art-- Looks 100% better in my opinion with your latest pic. I really like the way the marble looks now, with the alternation. But it's still too flat, without much detail. On the lighting--perhaps some electronic torches along the walls, following the staircase? But the best thing on the lighting is to make absolutely sure that anyone that sees the pic can tell what the source of every light in the picture is. So, I would disable sunlight in the skylab and put in my own lights (in the aforementioned positions). Also, this looks kind of like a dance/ball room to me (the fancy staircase and windows, the fancy marble floor that would probably chip just because someone looked at it wrong, lol). So perhaps you should make it at night? Then you could have the lights really contrast with the dark. Just some thoughts, looks good so far! =) Hope this helps you out.