For those who exercise, you (probably) go through a warm up before you start on your workout. This activity transcends physical activity, however, and extends to mental ones as well. A sketchbook is the perfect place to get ~ready~ to illustrate and try out new techniques. Julie Hamilton does just this with her collage sketchbook. Under the hashtag #sketchbook_studies, she cuts out paper of different colors and shapes, arranging them into various combinations that range from figurative to abstract. In each collage, Julie’s trusty pair of scissors is her paintbrush—just like Matisse—which gives her images a bold, angular appearance.