Using this Iron Man 3D wall - mounted deco light is a breeze. First, find a great spot on your wall to stick the unique crack sticker and then place the light on it. To turn it on or off, just use the on/off switch. Remember, you'll need to buy 3 x AA batteries separately and insert them into the battery compartment to power the light. As for placement, because it's wireless, you can put it anywhere in the room, like over a baby's crib or on a child's bedroom wall. When it comes to maintenance, keep it clean by gently wiping it with a soft, dry cloth. Avoid using any harsh chemicals or getting it wet, as this could damage the LED lights. And always keep it out of reach of small children when handling the batteries to prevent any potential choking hazards.