For the next step you will need a layout jig or a compass so you can mark a center line
Mark a center line front and back
Locate the ear on the backside with either another paper template, a hard template (pictured), or freehand draw it.
Using a Bullet burr 125, push down 2 lines for either side of the face.
Still using the Bullet burr 125 remove the ice next to each side of the nose.
Next round & shape the head, again using the Bullet burr 125
Apply heat with a propane torch (before)
One of the students heads
I gave it a try too
Each of the students heads