Darken the room except for the lamp. Point the directional lamp at one wall and sit between the lamp and the wall, with your side toward the wall.
Reposition yourself and the lamp so as to create the sharpest possible shadow of your profile. Make sure the size of the shadow fits on the piece of black paper you have chosen.
Tape or tack the black paper to the wall where your shadow falls. Position the paper to contain the shadow of your entire head and neck.
Have your assistant carefully trace a line around the edge of the shadow. The outline of your neck or shoulders should reach the bottom of the paper. If it is hard to see the shadow or the outline on black, use a piece of white paper instead.
Remove the paper from the wall and carefully cut along the outline until you have completely cut out your profile. If you drew your outline on white paper, glue it to a piece of black paper with just enough glue to temporarily hold it in place. Cut out the two sheets of papers simultaneously and gently pull them apart.
Position the black profile on the white sheet of paper and glue it in place. Flip the profile so it faces one direction or the other. Use the clean side, however, if one surface is marked.