- People who cannot draw well usually think that professional sketching is a complex and difficult process. But after reading this book you will find out that even the most complex sketches are just a structure of very simple but confidentially drawn segments layered on top of one another. This book simply shows you which features make drawings look professional, and why. You will learn that sketching is more about understanding human reactions to drawings than about mastering techniques or possessing any special skill or talent. Includes 14 exercises and thick practice sheets to further improve your sketching skills.