I'll see what I can do. Do you have any tips on how I could finalize them?
The current one seems, for the most part, just some yellow/brown mottling pattern. If you want a yellowish look like that, that's fine, but it should get more detail. A few tips might help;
- starting with the base; I'd take some sort of a basic paneling map and blend it with that yellow/brown mottling thing to form a new base. You could either search for some basic paneling textures and modify them to your needs or draw one from scratch, it's not that difficult..
- Add details and greebles where applicable and follow it up with a normal map;
- You need some windows in there. Windows in sci fi ships and bases serve as a great size reference, and visually break it up and make things more interesting. You might also experiment with baking some spotlights here and there to make it more interesting;
- Bake in ambient occlusion if possible - you will need the station's model and a 3d app to do this, however;
- If you've blended that mottling and paneling on the diffuse, you might want to increase paneling/mottling ratio in the spec map to make it a bit more interesting;
- Weathering: grab some custom brushes off the net (try deviantart and similar sites) and try and stack up several layers of weathering. You can play with opacities and blending modes to get the results you need. Try and get the weathering to follow some logical pattern (try and think where would some sort of weathering occur - i.e. dark scorch marks near any exhausts (mostly applicable to ships), paint chipped off near edges, longer sratch marks on longer angular surfaces, etc.
There's also plenty of photoshop tutorials on texturing out there if you need them. I consider this one an oldie but goldie - quite useful:
http://www.jamesodonnell.info/dingo_tut/index.html