Make face and hat. Roll out remaining black fondant to 1/16 in. thickness. Use pattern to cut eyes, nose and mouth. Attach to cake.
Using serrated knife, cut ½ in. off of the wide end of the sugar cone (for easier cutting, lightly mark the cone with a damp brush, then cut). Wrap remaining fondant (at 1/16 in. thickness) around cone; attach with water, if needed. Trim any excess.
Place hat brim on cake, then attach cone with small amount of icing.