Spoon 1/2 cup
vanilla frosting into a freezer-weight resealable plastic bag, and snip off a small corner. Tint remaining vanilla frosting red. On serving platter
, attach cake pieces together with red frosting to make shape of boot. Cover entire boot with a layer of red frosting. Freeze cake for 1 hour. Frost heel, toe, sole, and top of boot with caramel frosting. Place 1/4 cup caramel frosting in freezer-weight resealable plastic bag, and snip off small corner. Pipe line down center of boot.