REVIT: Weighted Companion Cube

I am a massive portal fan, and i think that you have inspired me to do my own portal fan 3Dart<img src="e.deviantart.net/emoticons/let…" width="15" height="15" alt="" title=" (Lick)" />
As for your image, ill start with the things that are good then talk about the things you could improve on <img src="e.deviantart.net/emoticons/s/s…" width="15" height="15" alt="" title=" (Smile)" />
The companion cube is spot on, it is just the right size, and all the colours match <3 oh cube, how i hated destroying thee...
The glass /plastic stuff is really nice also, it has a cool feel to it, and im not sure how you got it to refract the way you did, but it looks pretty flippin awesome <img src="e.deviantart.net/emoticons/b/b…" width="15" height="15" alt="" title=" (Big Grin)" />
Ok now the things you could improve on,
The texture over the walls is very blurred, and doesnt match the bump map (the bump map is good - very much like the game), the lines between the blocks/tiles on the wall look fine, but they start to do funny things around that corner block, like not match up, and get confused. Also the lights on the roof are a little blown out for the lighting in the scene.
You could fix that part of the wall by separating it and then mapping UV's that match the walls around it. (just use a simple planar map and some photoshop trial and error to get it lined up), as for the lights, just bring down the intensity of the actual visible lights and if the scene is too dim make some 'invisible' lights to compensate <img src="e.deviantart.net/emoticons/s/s…" width="15" height="15" alt="" title=" (Smile)" />
I hope i was at least a little bit helpful here.. im not sure what software you're using.. but if you let me know i may be able to assist further if you like.
Keep up the good work.