Scientific illustration continues to remain a critical part of taxonomy. Illustrations often require lots of time and, in many cases, the results are not as expected. At present, taxonomy journals only accept high quality digital illustrations; thus, image manipulation programs using vector or bitmap graphics have become the new focus of attention. This paper provides a step-by-step guide to making illustrations using bitmap graphics in Autodesk SketchBook. This application provides an alternative to other known tools by allowing: 1) faster illustrations; 2) direct drawing with a wide range of tools that simulate traditional drawing; 3) more detailed illustrations; and 4) an easy interface and work-flow for novice illustrators, all while being completely free and compatible with multiple operating systems.