Color

I like this one, especially the colours, but there are a few things that I'd do different.
First, the atmo on your planet is too bright because there are only a few stars in this picture. I'd choose another colour for it too.
THe picture could also improve by some more details. I like the brushwork here, but if you'd put a little more details in it, I think then this one would be awesome! I hope you don't mind my critique, just trying to give my opinion
.Ernst