To make the strange form at the right, I took this picture of a nebula http://i74.photobucket.com/albums/i251/freeorion/Josh/Nebula/Nebula16.jpg and I made a duplicate then superposed on the reverse. I also put a little glow effect.
Then I added some clouds a moon and a light with a blur effect.
Finally I changed the colors.
Thanks for viewing and downloading.