Thanks for the suggestion, Ray. It's just an experiment. The cactus is on the bench getting Dremeled. Adding the ribs. Later, it'll get a water color pencil treatment. Then, I may hang it up as the first of, Im sure, many more to fill what will become the wall of infamy.
Marie, patterns, at my stage of scrolling, would be a waste of paper and ink. I just used carbon paper to get the state and then drew that cactus...all directly on the plywood.