1. Learn to walk before you run. Perfect the classic vanilla and chocolate cakes with complementary frostings before you step up to other simple combinations, and long before you try something like Summer Peach Meringue Pie Cupcake. Actually, never try Summer Peach Meringue Pie Cupcake, which leads us to . . . .
8. Use butter or cream cheese rather than vegetable shortening in the frosting. Shortening leaves a slick, flavorless mouth feel that seems to last forever -- definitely longer than it takes to eat the cupcake.
9. Watch the sweetness, especially in the frosting. You need sugar, and lots of it, for a classic cake frosting, but you also need balance, or the chocolate, vanilla, fruit or other flavor will just get lost.