It's a colored-pencil drawing. CJ Hendry: I just kind of sit here and doodle around and just draw a little bit. Narrator: That's CJ Hendry. She spends up to 15 hours a day doing, well, as she puts ...

Whether drawing realistic or abstract subjects, an understanding of tone, the variations of light and shade, is important. A variety of pencils are ... mistake to have little difference between ...