Concept Scenery

So this may or may not be possible concept scenery for my cartoon. I wanted to go for that ridiculous cartoon moon look and decided to throw a tree in for kicks. This will eventually have more going on in it IF i approve of it later down the road. I'm not sure yet I am still very new to my tablet and sort of new to this kind of work on photoshop, so I'm still a little shaky. Tips are very much appreciated if you have any!