And now, the list. :-) Increase the scale of the floorboards, so they are smaller. Increase the scale of the board grain texture on the desk, so it's also smaller. Chair, possibly, too, but I cannot see the grain properly. for the ceiling, use pure white with a smooth plaster texture for bump. (Take care of the scale.) There are appropriate textures on animax.it and mayang.com. The wallpaper looks pretty good, but you should possibly decrease the Ambience value. Ditto for the rest of the textures. Pull the camera closer to the desk. Or not, depends on what will be in the rest of the room. For the light, try creating a small light globe, five or six of them in a spherical form and very close to each other, with a very small light value. You'll get softer shadows. Another light (lamp) on the desk would be good. You might also put a darker texture on the sky, so there's a reason why the lights are burning. For curtains, IIRC, www.baument.com has a set of curtains in 3ds format. HTH.

-- erlik