Documentation should be done to provide a synopsis of process and be accompanied by an image.
Artwork must incorporate at least two principles of light and color that you have studied in physics class. The principles that you use will depend upon your tools, the way(s) in which you express light and pigment color, and the specific plan that you develop for your project.
Before your artwork is created, you must have a plan:
a. What types of colors will you incorporate and how will your painting express these?
b. How will your painting express light and color?