This last image shows the preparation I am making to allow for transparent water in the pool. You may see the round step “under the water.” The light source or sun is coming from the right. (I chose this side because there is a wide vista window on the wall that is adjacent to my mural. It seemed natural to have the light coming from the direction that real light enters the room. The step gets the most light since it is higher than the pool floor and a horizontal surface that gets more light than most of the vertical planes. I want this area totally dry and set before adding water around the figure.