Okay, after a bit of work, and help from my friend, here's my updated screenshot. It looks pretty good in my opinion, but it still looks bland. And I don't know what to put in the background. Comments, concerns?

I know what you mean, but about the windows, this is a room in the heart of the space ship. And what I'm going for, is that the grey border, are basically the walls of the room, that's the foreground which the character will actually come in contact with. But I'm going for more detailed background than most people do. And this space station is abandoned, it was attacked from the inside and everyone was killed a few years earlier, and you as the character come back to turn the generator on to learn what happened. The generator, the thing in the back right, is way off in the distance, as you can see from the small computer near the base of it. And the thing in front of it, is close, but still a little ways away from the character in terms of depth. But to me, the walls look bland, but I like the style I did them in. And I don't know how else to texture them, I don't do well with texturing things. And on things that would be in the space station, I tried to add crates.. but I took them out as you can see because I just didn't like them very much. And plus, this is the generator room, and it's a big space station, they don't need to store stuff in there. But thanks for the help, no one else seems to care.
Do you have any suggestions as to where I might ut some panels, and what kind of panels were you thinking of. And the lights are off, because the power has been off since the attack.

That 'shadow' you fixed on the stairs actually wasn't a shadow. It was meant to be a trim on the stairs, but I forgot about it. And I like what you did to it, it looks good, but it's not what I was going for, but it does give me ideas

And I know that the textures are inconsistent, that's one thing I'm stuck on right now. I was planning to add textures, but I don't know where to start. And you bring up a point, what is it made out of? Metal?

And I'm working on having some pipe overhangs in the foreground that scroll different to create the illusion of depth. And I'm thinking I might do the same thing with the background but it moves slower

Let me get a current shot of what I have so you can see what I mean.

Here's my take on it, sorry that it's a bit much of an edit, I kind of got lost in it =P

What did I do? (these steps are not clearly represented in the image)

-sampled some of your colors
-started by painting in blocks over your image to get a basic structure down
-clean those lines up
-add in some basic shapes for the stairs, desk, tubing.
-basic shading and detail for the 'reactor' and airco.
-change colors, add separate blue ramp
-shading and coloring
-computer and chair
-bubbles
-Make computer screen images (bonus points to those who recognize what it is)
-some background silhouettes
-detailing the background (like the screens etc)
-superbackground blocks
-more computers on the right
-tweaking the medium background some more
-center console
-oh sh*t I forgot to shade the top of the 'reactor'
-cart
-vent in 'reactor'
-fill cart more
-tweaks

Comparison:

What's the big differences with yours?
-Simple, legible colorramps.
-More contrast, saturation, brightness
-Different materials (light, dark, glossy, matte)
-More consistent scale, desks all same size and format
-Real detail, avoiding barcode-esque shading lines and paintdrip-shading.
-Correct looking shading (it probably wouldn't work out IRL but looks good enough)

I love portal! I recognized it immediately! XD

HereTic, snader's post is very useful, but I want to add something to his edit.

You see the grey he uses? I think that that should be a little more blue, and the forground blues should be a little less saturated. Also, I think that the shading on the stairs should be expanding as the stairs themselves do.

I also want to say what a great edit, am really liking the blue in this one. Goodjob!

Edited by TheKovenant - 24 August 2010 at 2:01am

amazing edit.
 cool computer screens (dell?)