Wallpaper Design WIP

I was thinking of using these 12 symbols that I drew for my wallpaper. I tried really hard to perfect them, but they don’t look as good as I would like in this drawing, and I’ll probably change the designs of a couple of them. The spheres would all be different colors, while the symbols inside them would be a lighter shade of the sphere. I want the background to be multicolored, and I want it to have kind of a smoky or foggy look.