Bake and cool 2-layer round cake. Place on foil-wrapped cake circle. Ice smooth with yellow buttercream.
For cake border, place long side of White Sugar Sheets in border punch fitted with Waves Cutting Insert. Cut wave design from end to end. Use Rotary Cutter to trim to a 2 in. high strip. Repeat for two more strips. Attach for bottom border with water brush.
Using Rotary Cutter, cut twelve each 2 in. high and 1 1/2 in. high strips, 1/2 in. wide, from Bright Pink Sugar Sheets! Trim to fit wave border and attach with water brush.
Using punch with Swirl Cutting Insert, cut 30-40 swirls from Bright Pink Sugar Sheets!. Position on cake. Insert candles.
Combine Lemon Yellow with Golden Yellow for yellow shown.