Bake and cool two-layer cake (trim layers to 1 1/2 in. high for a 3 in. high cake). Place on foil-wrapped cake circle. Ice sides smooth with yellow buttercream and ice top with white buttercream. Attach jumbo confetti to cake sides with dots of buttercream. Use buttercream and tip 6 to pipe bead bottom border.
Use Circle Cutter to cut an 8 in. diameter circle from White Sugar Sheets! Use toothpick to mark 16 equal divisions using cake pan as a guide. Use green FoodWriter to draw 16-loop e-motion border on cake top, with a loop at each division mark. Attach to cake top with piping gel. Cut a 5 1/2 in. diameter circle from Light Blue Sugar Sheets! Attach over white circle.
Using Cupcake Pattern and black FoodWriter, trace cupcake base on back side (shiny side) of Light Pink Sugar Sheets! Cut out with scissors. Trace and cut cupcake top from Light Yellow Sugar Sheets! Use pink FoodWriter to draw pleat lines, about 3/8 in. apart.
Using piping gel, attach cupcake pieces to cake. Use piping gel to attach confetti sprinkles from assortment to cupcake top; attach one jumbo sprinkle at the top.
Sugar Sheets! bring the ease of paper crafting to cake decorating. There?s no better example of this than being able to trace and cut any shape you want onto the back. Create your own pattern or use one that?s part of your Wilton design.