I may have done as many as ten thousand of these in my twenty year career, and most of them had a similar layout. After a while it becomes instinctual which was an asset because you never find yourself standing there wondering what to do, you just start painting. It was a formula which you could use on most jobs. Which is the only way to get along in that business because it didn't pay a lot so you had to make your money in volume which means you have to move very fast.
For another example of this see Goblin Queen