You can see that the light sky is beginning to take shape, and the ground is flattening out. Because my process is a building one, the forms will be painted over and over pushing them into each other and around each other. By painting the sky, the edges of the trees are obliterated, and by repainting the trees the sky and trees will be woven together back and forth until each finds it place on the canvas. The same will happen with the undergrowth and grasses, yet unseen. Fortunately in acrylics this is easy to do, where in oils you'd be making mud.
Here composition is still being defined and strengthened and a dark barely seen in the photograph will help to carry your eye from the foreground into the painting. At this stage I work with a dirty brush, almost dry brush and haven't yet begun to form a color strategy for this painting.