In advance, make fondant message stars, cake side stars and swags. Tint fondant as follows: 4 oz. each royal blue, violet and orange, 18 oz. lemon yellow, 22 oz. rose and 28 oz. leaf green/lemon yellow combination. Add 1/4 teaspoon Gum-Tex to 4 oz. portions in each color. Reserve 12 oz. white. Roll out colors 1/8 in. thick. Cut message stars using 3 largest cutters from Nesting Stars Metal Set. Cut 8 cake side stars in each color using medium star Cut-Out or smallest nesting plastic star cutter. Let dry on cornstarch-dusted board. For swags, roll out white fondant 1/8 in. thick. Cut a circle using Circle Metal Cutter; cut swag 1/2 in. from bottom edge. Brush swags and stars with water; sprinkle with Cake Sparkles crushed through a tea strainer.
Prepare 1-layer cakes (2 in. high) for rolled fondant. Cover with fondant; smooth with Fondant Smoother.
Divide 8 in. cake in 10ths, 10 in. cake in 12ths and 12 in. cake in 15ths. Attach swags at division marks with damp brush. Attach cake side stars at division points with damp brush.
Bake and cool cupcakes in silicone cups. Pipe tip 1M swirl in buttercream. Sprinkle with confetti sprinkles from Flowerful Medley assortment. Insert candles.
On message stars, pipe tip 2 dots and message using royal icing. Attach to lollipop sticks with royal icing.
Position cakes on stand. Position cupcakes and insert message stars.