Arianna's Mural: To paint or not to paint?

I'm itching to start painting all the drawings in Arianna's room but I'm not completely finished with the sketches. My preference in painting is to put something up and then revise over and over again until I get something I finally like. It usually begins with light marks with a pencil, revision with a light colored paint, revision with a med color paint, revision with a dark paint and then start painting it in with some of the color. Then I keep fussing with it until I'm forced to move on. The process is very undisciplined and non-committal. I've had more than one art teacher over the years comment on it, wanting me to be a little bit more certain in my application.

Once I put paint on the wall in Ari's room I can't really fix it. I can do minor touch ups, but he walls are a painted texture and I don't think I have the colors any more. So it is really important that I have the majority of the editing done before I paint. I've set asside most of today to work on it, so we'll see what happens. I'm making myself finish all the character drawings first before opening a paint can.

Anyway, that's where I'm at on the mural in case y'all were wondering.