The end points are located on a concentric ring located around you. These water diamonds are areas where you are looking directly into the depths of the water. Second the action lines. Any one of the action lines can be the leading edge of a wave. Select your waves positions and erase all the unnecessary lines before painting in water colors.
Clouds can go either way depending on the clouds and suns position.
The fan brush can do a lot more then just blend and make grass strokes. Next, Painting with these techniques. Subscribe to 'Painting on Location' List for artists, Questions and Answers.