I didn't fuss with getting smooth layers but put some effort into Halloween tastes. The bottom 10 in layer was a chocolate/chocolate chip with a peanut butter filling (my version of Reese's), the center 8in was my take on Mounds Bars with a coconut cake with a dark chocolate whipped ganache and the 6in was candy caramel apple with an apple cake with an apple cider sauce and a caramel cream cheese filling. I had a problem when all my royal icing spider webs were put in the refrigerator at the party and they just liquidified (luckily in the box and not on the cake).