Step 4: Cutting the Neck
Make a triangular or half-circle cut below the heel (a.k.a. the mouth) on each side of the sock. After we sew this up, it will define the monster's neck. Be sure not to cut too far in or the neck won't support the head.

Make a triangular or half-circle cut below the heel (a.k.a. the mouth) on each side of the sock. After we sew this up, it will define the monster's neck. Be sure not to cut too far in or the neck won't support the head.