In advance: Make bow. Tint 6 oz. of gum paste rose. Roll out 1/8 in. thick. Using Bow Patterns and knife, cut one bottom and two top sections. Score lines with veining tool from set following pattern. Let dry on cornstarch-dusted board. Attach top sections to bottom with gum glue adhesive.
Also: Make polka dots. Roll out white gum paste 1/16 in. thick. Cut circles using wide end of tip 2A. Attach to bow with gum glue adhesive.
And: Make knot. Roll a 1/2 x 2 in. long log of rose gum paste. Flatten to 3/4 in. wide. Taper one end and attach for knot with gum glue adhesive.
Bake and cool Minnie Mouse cake. Position on foil-wrapped cake board cut to fit.
Outline facial features with tip 3 and black buttercream icing. Pipe in eyes with white, mouth and pupils with black and tongue with peach (smooth with finger dipped in cornstarch).
Cover top of head, nose and ears with tip 16 stars in black. Cover face with tip 16 stars in light copper. Pipe tip 3 dot eye highlights in white and outline lashes in black.
Position bow; prop up with a small amount of icing.
The star tip creates the most celebrated, easily accomplished decorations! The serrated edges of the star tip make ridges in the icing as you squeeze it out. Because fill in requires so much piping from the same bag, keep replenishing icing in bag.