Creating an Oil Painting - Zion's The Watchmen

I decided to paint an oil for a juried show celebrating 100 years of Zion as a National Park. Unfortunately, I had less than a week to complete the painting. I began on Sunday, laying the underpainting. Here is the sky, which is almost at its final state. The dabs below mark the reflections in what will soon be a creek. I had company, and every half hour or so they would wander through and see how the painting had changed. It is a pretty dynamic process in the early stages.