Room rendering

This is a part of my current project, in which I had to draw a persective inside my building design. THis is not the final product but it's very close

IT IS with the same project as the floor plans I submitted a few days ago, this is looking down the artist studio spaces which on the floor plans... if you can read them
is at the top section above the yellow tiled area...

Here's what the drawing in photoshop started out as:
[link]

Tools used:
Scanned hand tracing
Photoshop CS2
--Mystical lighting
--Alien skin Eye candy: textures