Celebrate with a cake shaped like a castle on your princess' next birthday.
Place one of the square cakes on a large platter. Frost, then layer with the second square cake.
Place the cupcakes on top of the cake in each of the four corners. Top each cupcake with an inverted ice-cream cone. Frost the cupcakes and cones. Score the frosting with a fork to make the textured castle siding.
Now, add candies. First, sprinkle the green sugar on the cones, then top each cone with a Hershey's Kiss. Outline the top of the cake with Necco Wafers. Create a castle door with more Necco wafers and M&M's.
Surround the cake with the blue Jell-O and a ring of the green shredded coconut.
Finally, place a graham cracker drawbridge over the moat, and invite the party guests to dig in. Serves 8 to 10.