Natural science illustration encompasses a myriad of subjects. Some fascinating ones that are often overlooked are toads and turtles. Their skin and shells have amazingly beautiful textures, patterns and colors. This 36 page workbook guides you through three paintings. First is an exercise using a simplified snail to practice the all important technique of blending gouache. The second lesson explores the bumpy texture of the American Toad and the third lesson details the steps to create the beautifully patterned Eastern Box Turtle.