How can I decorate a pineapple upside-down cake?

Take the pineapple and carve it into a ball-ish thing. On the top if you carve out a triangle thingy, it will make it look like a heart. Carve it more to make it look more like a heart. on the heart, use a small knife to write "happy birthday!" Make a hole with the knife to put the heart on the cake.