Here are some simple do it yourself (DIY) instructions to create your own brick pizza oven using your existing oven.
Simply purchase either two 12 inch pieces of unglazed (very important they are not glazed) ceramic quarry tile or eight pieces of 6 inch tiles.
On the top rack of your oven place a set of tiles to create an upper layer that browns the top of the pizza. On the lower rack of your oven place the other set of tiles to create a bottom layer that crisps the pizza crust.