6 - Line as value

One line can show the basic shape of objects but it looks flat. Line can be used to create value by adding depth to the subject. Lines close together can create different shades of gray and the farther apart lines are more shades can be made. This can create lights and dark's aka value.

Here, line is used to create value by its shading. The artist has used lights and darks to show depth and make the subject seem realistic and 3-dimentional. In this piece, to create the value the technique of cross-hatching is being used to give fullness to the figure.