"The Wash Method: Three Washes, Four Values."
Here's a restatement of a recent painting in the simplest form of the method...no modeling, no soft edges, no paint texture. Just value spots in an alternating rhythm of light/dark/light/dark. With practice, you should be able to do a study like this in a half-hour, including drying times. You can do it before breakfast, as I did this morning.
I said "...no paint texture," but I meant no INTENTIONAL paint texture. Note how the 3 accidental water spots in the planking, lower left, enhance the illusion of the transparency of the cast shadow. That's what I'm talkin' about! "Gull III," watercolor on Arches paper, 15" X 11."