Here are the pictures that I had the privilege to paint while learning under Tom Lynch.
The first is a night painting of a farmhouse with a pile of cut flowers ready for sorting the next day. A light source is shining from outside the painting to illuminate parts of the yard.
The next three are a whole workshop on painting sunlight and shadow.
The first (right to left and then the one below) is a work on how the sun affects land from the sun source and out. When sunlight shines from the source on land (as in a sunset) the color series is from yellow, orange, red, red-violet, violet, then deep blue. After the deep blue is reached the real color can be visible.
The second painting is the sun shining through the trees.
The third is the effect of shadows cast by a group of tall trees.