I tried a lot a lot of new things with this one. This is my first picture with an up close planet and also the rings on the second planet is something new. I tried a new technique with the space as well.
I like the colors, contrast, planet textures, that ring around the another planet and that starfield.. You also did great work with the atmosphere on the up close planet. Everything is great.. The planets just could be little bit more spherized. They are maybe little bit too flat looking now. Anyway, great work.
I really like your work, but the watermark in the direct center makes it look atrocious as a wallpaper. Are you willing to share versions that are less obtrusive so that I (and others) can admire and enjoy them without it ruining the scene? I can understand any concern you might have for someone stealing your work. So if you don't want to I'll understand.