Bake cookie. Spray pan with non-stick spray.Press cookie dough into pan. Bake at 350°F for 30 to 35 minutes, or until cookie is lightly browned and center is firm. Cool 10 minutes. Remove from pan and cool completely on cooling grid.
Prepare polka dots. Roll out fondant to 1/8 in. thickness.Using large side of tip 18, cut out 20 circles. In small bowl, add gold Pearl Dust and enough lemon extract to make paint consistency. Using brush, paint dots gold. Let dry, about 20 minutes.
Tint icing. Reserve 1/2 cup icing white. Using teal icing color, tint remaining icing teal. Using spatula, spread teal icing on cookie, leaving 1 in. border around edge of cookie.
Decorate cookie. Add fondant circles to iced part of cookie. Prepare four decorating bags with tips 1M, 16, 21 and 18; fill each with reserved white icing. Pipe stars around border of heart, alternating sizes.