My students are currently working on their Doodle Design drawings. We are working on glossy rainbow paper with Sharpie. When a paper is glossy and the back is white, any color printed on the paper is typically sitting on the surface of the sheet, rather than permeating into the paper fibers. This allows for a technique to be used in which a standard pencil eraser is used to scrub away the printed material revealing the white below. Hard edges and fine detail are not as easy so its more of a shading effect. I introduced this an an option for those who wanted to try is to add more variety to their Doodle Design projects. Another possibility is following this eraser technique with applying marker of a contrasting color to the now white areas of the paper.