Using this LED cake topper is a breeze. First, make sure the batteries are properly installed as they come included. Then, find the ON/OFF switch on the side of the base and turn it on. The topper will start flashing with three different color - changing modes, adding a great look to your birthday cake. You can mix and match it with other party supplies to create a more festive atmosphere. When it comes to maintenance, keep it away from naked flames or direct heat sources to ensure its longevity. Also, if the lights stop working, you can check and replace the batteries as needed.