Put a chair near the wall, facing sideways. Set a lamp next to the chair. A lamp with an adjustable neck would work best, but any lamp will do.
Tape a piece of white paper to a wall so it is at eye level when you sit in the chair.
Position the chair and lamp close enough to the wall so the shadow of your head fits on the paper. Sit in the chair.
Trace the outline of your silhouette with a pencil.
Remove the paper from the wall and cut the silhouette with scissors.
Lay the cutout on a piece of felt.
Secure the paper to the felt with push pins.
Cut the outline of the paper silhouette with scissors. The result is a felt silhouette of your head and face.