Step 3: Ready, Aim, FIRE!
Next start heating the pipe till it gets red, copper bends really easy when you add heat. Use a pair of pliers and start spreading the super heating copper out till it fairly flat. Take your ball peen hammer and start tapping it till flat, occasionally adding more heat. Once you have it as flat as it's going to get take a wire brush (or a bench grinder with a wire wheel) to clean it up and make it shine.