Trace out the path you want to take with your scroll saw on your tile with a permanent marker. This guides you when the process begins.
Install a tungsten carbide grit-edge blade on your scroll saw with the device unplugged. Do not operate on the device while it's plugged in, even if you don't turn the device on. You may accidentally turn it on, causing you injury.
Plug your scroll saw into a power outlet and turn it on.
Lay your tile on the scroll saw's working surface and align the beginning of the area you marked with the moving blade.
Push your tile gently into the scroll saw blade until you have completed the cutting process. Keep as much of the tile as possible on the working surface of your scroll saw. This prevents pieces of tile from falling and breaking.