1. Add a few drops of the shampoo into the water, spray a mass of water on the glass and the window film，you will find it very convenient and easy to work.
2. Please be sure the backing film is peeled off; otherwise, the film will fall off when the water is dry. (Our window film can be applied several times)
3. If your window edge is not flatness, maybe you can try to cut 0.1 inch smaller than the glass size in order to fit tightly with glass.
4. When applying in cold weather: Soft the film up by blowing hot air to it using a hair dryer(Heat Resistant up tp 176℉)
5. After you position the film, please smooth out the film with squeegee, make the air bubbles and water out completely.