Drawing pencil sketches or thumbnails may seem boring and tedious, or you may fully enjoy it, depending upon what the sketches are for and if you HAVE to do them. In any case, planning your projects with pencil sketches will greatly improve your end results. Sketching out ideas or even just jotting down some ideas on your pages will greatly increase the number of your drawings and help you realize the full potential of the ideas or concepts you are trying to get across.