* demonstrate an understanding of hatching and crosshatching
Making your own value scale like the one on the preceding page would be a good exercise for you if you are interested in learning the technique of crosshatching. You can see why it's called by this name since you make darker and darker areas by using layers of lines that cross over one another.
You'll notice we're not really concerned with crosshatching at this point but just sketching out the basic shapes.
Now it's time to begin filling in some of the shapes we've drawn--some filled completely black, others by crosshatching.
Crosshatching works well if you are using a good sharp pencil, or a fine-point, ball-point pen or marker.
These include the use of simplified silhouette shapes, textures such as crosshatching
and dots, and decorative borders around individual forms and complete works.
ENGRAVED OCHER CHIPS FOUND in South Africa's Blombos Cave in recent years feature what could be triangles, waves, fans, or maybe just fancy crosshatchings
that are dated to between 77,000 and 100,000 years ago.