Good Morning Fantasy

So this is my first "Large Art"

The planets are not made by myself found'em in a tutorial but i'm on the way to learn how to create planets...need to read some good tuts .

Not sure about the picture i've never done this before. It was kinda hard to work with the clouds because i wanted to bring some of them infront of the planets to get realistic look...so i'd be happy if i could get some C&C to know where&how i have to improve.

are welcome aswell...if i get some