I used my Styrofoam cakes to make it.
buttercream frosting to frost the rest.
I put food coloring in a bag full of sugar and colored it pink for the cones on the towers. Then I frosted the cones and rolled them in the sugar.
This cake was a ton of fun to make. It was pretty funny to see everyone's relief that we wouldn't be eating the cake. Instead we had angel food cupcakes with fresh strawberries and whipping cream. The kids got some fun confetti lollipop cookies.
Where to find the Castle Cake Set by Wilton (affiliate Link)
Marshmallow Fondant Recipe along with Butter Cream and Royal Icing Recipes and tips on how to use Fondant