After toning the canvas, I rubbed parts of the mid tone layer out to create lighter parts of the scene. Then by adding blue to the tone mix I painted in mid values and darks.
Once the values had been put in , I started adding the lights,beginning with the sky.
After filling in the sky I tweeked the clouds and then put in some of the mid shadow tones, and greens on the Maram grass in the dunes.
