3. Use your photo-editing program to crop the photo so that the face takes up most of the rectangle, then change the color to gray-scale.  Fuss with the brightness/contrast to get a nice, light photo with deep shadows and good dark lines.
4. Print the photo to fit the paper.

5. Tape the photo to a bright window at shoulder height, and tape a blank piece of paper over the top of it.
6.  Now you are ready to draw your self-portrait.  If a child is doing the self-portrait, inform him ahead of time that the finished product will NOT look exactly like him.  In fact, for some this might be a good Halloween project, lol.  Depending on child's ability, he can just draw the lines he sees or he can shade in the shadows.