Share a little about the materials, processes and techniques used to create this piece. Colored pencils I had in the house What are you most proud of? Happy that I completed this project the day I started it. What advice would you give someone starting this project? Gather your colored pencils before starting warm and cold versions of the 3 primary colors and 3 secondary colors (12 total), white, a blending stick, isopropyl rubbing alcohol, and at least 2 Q-tips. Before you start filling in the 2 grids, test to see which are warm and cool. Red is warmest); Deep violet is coolest.