This is suuuch a successful project that the kids are always proud of.
This is the intro "inspiration" powerpoint that I show to start off the project.
-how to pick an image with lots of value, not high contrast
-how to use the pencils/tools to create image
They basically have to cut an image in half, and draw the ONE side of the face. This way it's less intimidating, and they really have to work at matching the values in the original.
Also in my shop is a rubric for this project.
TIP - have students get creative in HOW they cut the image. I always require them to have at least one eye/part of a nose/part of a mouth (to demonstrate enough techniques)