These are good, but it would be better if they where pictures from LFS. I mean, you can get some great effects if you use gimp/photoshop , Look at my avatar, i created that from a raw screenshot and 30 - 40 minuites in GIMP... Check out the screenshots forum for ideas, you can look at my night time thread, or the photomode threads, there is alot of great work in there.
Hope this helps... I might make my own background back now