I thin some paint and indicate the major areas of the of the scene. As you can see I put in the clouds, knowing they are the lightest value in the painting. The horizonal line running a quarter of the way up from the bottom is the far bank, and the blank area right above that is the tree line. The two marks are the fishermen, and the rocky point with the vegetation. I've kept everything simple, sky, background trees, river, rocky point and fisherman.