Here are some examples of plexi-glas plates that were engraved with a sharp tool like a stylus or x-acto knife. The plexi-glas was then covered in black etching ink and then wiped off. The allows the ink to stay in all of the valleys created by the the stylus. Next the plate was placed on damp charcoal paper and run through the printing press.
For your homework you will be engraving your plexi-glas. Place a photograph (not a published picture from a magazine) underneath the plexi and use the photo to help guide your lines. The more you scratch the darker that area will be.
Try to capture all of the value scale. It will be strange because the plexi will turn white when you scratch it. Think in reverse and place the plexi over a white piece of paper with a strong light. The shadow will give you an idea about how your finished print will look.
Avoid words (They will print backwards)
above: Jessica Russo Scherr