Joozey, the two planets on the left could do with more distortion of the texture. Have you checked out the gimp Planet tutorial? http://mygimptutorial.com/the-ultimate-gimp-planet-tutorial I found it to be pretty awesome, the results are great and it's quick and easy.
I used it to make all planets in the background of our site: (They change once every month.) http://csis-game.net/
Last edited by Germanunkol; 01/08/1318:13.
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