Step 1: Materials
Plaster cloth roll
Step 2: Making the Plaster Mask
Make sure you have a pile of plaster already cut into strips at the ready. Size doesn't matter than much, but strips that are around two inches wide and three inches long are manageable.
Begin by dipping small pieces of toilet paper into the water and laying them over your volunteer's face. Make sure you cover the entire face, making the toilet paper about four-five sheets thick all around. This way is less precise than slathering the face in Vaseline, but it's a lot cleaner and has less of a risk of the plaster sticking to the face.
Step 3: Using the Plaster
Dip the strips in your water and run your fingers together over the strip to make sure it's not too wet.
Apply the strips all over the face, using fingers to blend edges together.
You can apply as many layers as you want, but just make sure the mask is at least three layers thick, or it will likely break once dried.
Step 4: De-Masking
I know, exciting.
Give it the night to dry.
Once it's dry, you can pull the toilet paper off from the back.
Step 5: Adding Aluminum Foil
Cover the mask in glue and use the brush to spread it out and then add strips of foil, smoothing them over the surface. Paint over the edges so they stay down. It'll dry clear.