This is was the first rough I started when I began concepting for a project I am working on. Once I got it to this stage, I didn't like the direction so I left it alone and started another painting which was ended up heading closer to the direction I had in mind. By doing this rough I realized what design elements I wanted to avoid in the world I was trying to create. The terrain was coming out too familiar and not alien enough, so moving on to other paintings helped me flesh out the alien planet and develop a color palette.
Once I had developed the alien world, it was easy to come back to this rough painting and take it to a finish.