Painting "light"

In most of my paintings, my goal is to achieve a sense of "light" that will add spirit to the subject. For me, good "light" grabs your attention and brings energy into the painting. I am drawn to paintings that use contrast and light to create a mood. In watercolor, the illusion of light is captured by painting around the light. That sense of light comes from achieving a contrast of values within the painting (the lightest value being the white of the surface). Using a range of color temperature contributes to this illusion as well. I also like to paint in a little light using touches of cool yellow (Hansa Yellow Lt) hinting at the idea of sun. I am at the midpoint for building the values in the above triptych (each section 12x12 on Ampersand Aquabord).