Remember if you are doing a landscape, that you have to work towards your horizon. When you work, go from your perspective out to the horizon, remembering that all the colors in the atmostphere, between you and the horizon, have to be worked into your color......In other words, as you work out, be sure to think of your subject and colors, and include a tiny bit in your next progression to the horizon. Please ask me if you have questions......Donna:)