|Barnyard Light, gouache, 5 x 8 inches.|
After a basic drawing in watercolor pencils, I added thin layers of gouache with a flat brush. The casein underpainting is a closed surface, meaning it won't dissolve again once it's dry.
The barnyard was actually lit rather evenly. To carry off the selective light effect, I darkened and cooled the tones in all the surrounding areas, and kept the lit areas pale and warm.
Good news on the upcoming tutorial video "Gouache in the Wild." I locked the edit earlier this week, and am now designing the cover. One of the six painting adventures is an example like this, where I show how to create a theatrical light effect on location.