After I finished the outline sketch of the two palm trees with the San Bernardino Mountains as a backdrop, I decided to paint in the background. First, I under-painted the sky with a sparkly light blue color, and then I added a regular light blue acrylic paint. Once that dried, I went back over this with the light blue sparkle paint so the sky would shine.
Next, I under-painted the San Bernardino Mountains with a mixture of purple and blue paint, to create the purple tone that is often spotted when these mountains are seen from a distance. Next, I added splatters of white paint to create the look of snow, and then when over it with a light blue glitter paint to give the snow a luminous and sparkly effect. I still have a lot to do to the painting, but it is progressing. Now it is time to paint in the palm trees, but I sort of like the negative space the unpainted palm trees create.