Heading up the Maine coast to Prince Edward Island, and again on the way back, we stayed in this cabin that has been in the family of a friend since 1946. A peaceful lakeside place on twenty acres just a few miles from the coast. No shower. Had to go swimming to clean up. Ahhhhh.
You marker fans can pick out the three values pretty easily here. Imagine how I had to subdue the dark forested background in order for the cabin to stand out. It's easier if you follow the first 'rule' and quickly separate the dark from the light before going on to darker values. The same for painting.....use middle values to make a statement about the light and then, like a sculptor, carve out the painting with the darker and lighter tones.