The high lights should be cut with a sharp knife, each cut being horizontal, and from lin. to 3 in. in length. Take care the cuts do not run into each other. The path of the moonlight across the water should be cut thickly and close, especially at the horizon, getting broader as the bottom of the picture is reached. A few cuts to represent ripples about the other part of the water will give a nice effect. A good light must be placed behind the picture, the light in front being very dim. For a small subject there is no necessity to cover the cuts with gauze; the movement of the painting as it travels along will give the shimmering effect.