Part of my visual development for one of my personal projects. Made with a Prismacolor Col-Erase Scarlet Red pencil. I picked up the red pencils again last year to help speed along some of my storyboard roughs. I switch supplies frequently so I can keep moving when I get stuck. Unlike many illustrators, I do not have a "technique" for all my jobs. I approach each assignment with the media that might best serve the idea at the time.
