When I’m drawing it’s important to have the simple value plan. I like three or four values at the most depending on the image. I start with placement. After observing the scene and getting the sense of the light and shadow patterns I come up with an arrangement that I think will convey the sense of this place. I want to incorporate the cloud patterns across the landscape and use them to help my center of interest and create a feeling of depth.
If you work in concept or production art this type of sketching will help you build a mental library of real life experience to help in construction and design of environment drawing. I always felt one of the advantages I had getting work in those industries was the amount of drawing and painting from life I did and how it affected my work in the studio..