Build your colors gradually, and layer them. Apply a light undertone, and build darker colors slowly on top. Crayons can actually be more difficult to layer with due to the high wax content. Don't confuse them with colored pencils! If you want the "look" colored pencil, just use that instead.
Coloring Tips and Techniques. First of all _ choose what coloring material you would like to use. There are lots of coloring materials to choose from like: crayons, colored pencils, markers, soft and oil pastels, and many more. It's your choice which media you'll be comfortable in.