This is totally your call. I do, on occasion, like to use my Wilton bake strips when baking round cakes. They do an excellent job of preventing doming on your cakes. If you don't have any, you can either cool the cakes upside down on the cooling racks or simply cut and level the domes off the top of your cakes. Make sure to use a serrated bread knife and wait until your cakes have cooled completely.