To create an 'open wound', the Derma Wax construction has to be 'cut open' with the sharp side of a Derma Wax spatula. Lubricate the tip of the spatula with a little bit of Cleansing Cream. This will allow the spatula to slide more easily through the Derma Wax, preventing it from sticking to the spatula. Make a horizontal cut in the Derma Wax structure across the nose.
To add a suggestion of depth to the 'wound', colour the bottom of the wound using black make-up. Then you colour the inner side of the wound with dark red make-up (Grimas Water Make-up Pure or Crème Make-up Pure).