Make heads and coal 1 day in advance. Knead 1/8 tsp. Gum-Tex into a 3 in. ball of white fondant. For each head, tint fondant 1/2 in. ball orange for nose and 1/2 in. ball black for mouth, pupils and coal. Reserve remaining fondant.
Use fondant roller with purple guide rings to roll out 1 1/4 in. ball of white fondant 1/8 in. thick. Use knife and pattern to cut out head. Place on parchment paper-covered cake board. Use fondant roller with pink guide rings to roll out remaining white fondant 1/16 in. thick. Use knife and pattern to cut out lip and tooth.
Use fondant roller with pink guide rings to roll out black fondant 1/16 in. thick. Use knife and pattern to cut mouth and use small end of tip 6 to cut two pupils.
Roll remaining white fondant in two balls, each 1/4 in., and flatten slightly for eyes.
Form orange fondant into carrot-shaped nose, 3/4 in. long x 5/16 in. at base. Roll remaining black fondant in three flattened balls, each 3/8 in., shaping as desired to resemble lumps of coal.
Use dampened brush to attach mouth and lip to face, then adhere tooth on mouth. Attach base of nose to face. Adhere pupils to eyes, then eyes to face. Place on parchment paper-covered cake board.