In advance: Make fondant hamburger, spatula, candle, and hat. Combine 2 teaspoons of Gum-Tex with 24 oz. of fondant and tint as follows: 2 oz. each: navy blue, black, tan (for bun), reddish brown (for burger), Leaf Green (for lettuce), gray (use a small amount of black), light blue; tint 1 oz. yellow. Reserve 6 oz. white. Roll out fondant 1/8 in. thick on cornstarch-dusted surface. Using patterns, cut entire hat and hamburger/spatula/candle in white to use as base; cut color sections using patterns and attach to white base with damp brush. Marbleize yellow and brown fondant from burger; roll out 1/8 in. thick and cut flame shape. Let dry.