Using this Day of the Geek LED Skull Badge is a breeze. First, gather your basic soldering tools like an iron, solder, and diagonal cutters. Then, start assembling the components from the kit onto the Skull PCB. Solder the red, blue, and white LEDs where they're supposed to go to bring your skull to life. Attach the CR2032 battery holder and the pin back. Remember, the battery isn't included, so pick one up either from us or a local hardware store. When handling the soldering iron, be careful as it gets very hot. Don't over - solder the components to avoid damage. To maintain your badge, keep it away from moisture and rough handling. If you want to change the LEDs later, just unsolder the old ones and solder in the new ones. Have fun showing off your customized badge!