The waves must be thought of as three-dimensional objects. These waves are also very broken and incredibly choppy, so scattered foam plays a large part in telling the story. I lay in the darkest passages and try to describe the basic pattern and shape of the waves. Once this is done I choose a dark yellow ochre where the waves are thinning and breaking. This describes the light that’s shining through the thinnest part of the wave. I can already start to feel the movement in the water.