Double Layer

How can I make a double layer cake?
I am a birthday cake for a friend and I really want to make a DL! They always a lot better!
It takes two round cake pans and pour your dough into two molds instead of the usual rectangular mold. Once you have done (and can be nailed a toothpick in center comes out clean) and set it to cool completely. Then set a single layer and put some icing on his he acts like glue when you put the top layer. Then put the top layer and carefully on the ice it. Piece of cake! lol