Landscape Pastel Drawing

Currently, I am working on a pastel drawing of a water scene. I am using a complementary color layering technique to build up the complex colors within the drawing. For the base layer, I've used the complementary colors purple and yellow to block the light and dark values in the scene. A picture of this beginning step is posted above. After spraying a fixative onto the drawing, I will continue to build color by working around the color wheel.