Make paintings while the sun shines
Right now, and perhaps tomorrow there are bold shadows everywhere. It seems wise to put the layer project on hold and practice shadows for a while.
I can see shadows inside the house, and a great many from the windows. Try setting up with a minimal kit and doing numerous quick studies, focusing on a single effect, such as where a shadow passes from one surface to another, changing color. Don't concern yourself with painting a whole scene. This is meant to build seeing skills and technique, and to practice getting the essential info down and moving on.
Here are a few photos I took this morning, with notes about the watercolor variables that come into play for each:
|Color: changes as shadow passes from one surface to another.
Value: darker nearer to shadow source.
Wetness: edges soften farther from source.
|Color: Shadow color changes with orientation of plane and with proximity to reflected light.