Let the Mage first be proficient in his use of the Wizard's Mark.
Next he shall select a place wherein to place the Magic Mouth. It may be that he intends a message to go to a specific person, or to anyone who enters.
Next he shall concentrate upon his message while he enflames himself. Let him see himself speaking the message aloud.
Let the Mage then draw the Message in the chosen area.
Should he suspect a place of containing a Magic Mouth, let him Read the area as in the Wizard's Mark.
