Help with my spaceport!

[Manupix]

I wouldn't say the station looks like one, but in the context it should be pretty obvious. And it will be more interesting for the originality.
Maybe try to wander further from your ref though?

Your light doesn't read very much as spacelike: light in space is usually of the highest contrast. Shadows are mostly hard black. Check some ISS pictures.

I don't think a too realistic bg would fit, the styles might clash and result in a poor global effect.
I'd suggest to look at pure PA starry skies, like these.

[Supahcool]

I looked at some ISS pics and compared to that mine surely doesn't look like a station. I figured mine would be something in between what we have today and some sleek stations from science fiction 

You're right, the lighting definitely needs to be more extreme. Thanks for pointing out the PA/non-PA problem, there's definitely a style conflict I overlooked. I'm having to redo my whole environment now PA space backgrounds look nice but they're a bit out of my reach at the moment. Stuff like <a href="http://www.pixeljoint.com/pixelart/24756.htm>this[/url]