Tape the end of this circle together under your chin. It can help to have someone else do this; if not, fit in front of a mirror.
Knot this so that when it’s around your head, it won’t fall off.
Cut these out and use them as templates.
Bend the top of the T over. Align this with the circle strip, above and in the middle of where you have already stapled on the elastic. Glue, tape or staple in place. Being guided by the placement of the trunk, attach the right ear on the right and the left ear on the left. Again, tape, glue or staple them in place.