First, clean and wet both the overlay and the headlight with a mix of a drop of dishwasher soap and water. This helps you place the overlay correctly. Put it in the right spot and use your fingers to push out the water. This way, you won't damage the overlay. You can also use your nails to make sure the edges stick well. It's a good idea to use a heat gun on low or a hair dryer to make the vinyl stick better. The soapy water made it easier to align, and the heat will dry the water. It also helps the overlay wrap around the edges. Let the overlay stick to the headlight for 24 hours. Once it's dry, it can withstand automatic car washes and most power washing.
