You are thinking, how do you make the template for shower glass panels? These instructions will make you regret not knowing them before. You have to buy some tool to do it. Those are a piece of wood, drywall, metal channels, and a foam waterproofing panel. If you want to save money, your choice would be plywood owing to the fact that it is easier to cut than plywood and made the template easier to make. The second step is cut the metal channels for the glass. Then, you must hold the metal channels on the tile wall and marble. If you want to know other steps of making a shower glass, you can search the internet.