Very Easy and Useful Window Film Installation Steps Give Important You:Clean the windows carefully and thoroughly to make sure the windows are clean.Measure the actual size of the window, and cut the film to the proper size you need.Removing the backing film(transparent film) is very very important.Spray a lot of water on the window. (Don't regret the water, which will help you to squeeze out excess air and bubbles easily.)Stick the window film to the window.Carefully remove excess water and air from top to bottom with a scraper, otherwise, the window film will easily fall off.Dry the window. Enjoy your works and believe that it must be a wonderful feeling!Tips that will be useful to you during the installation process:Please keep the 3 mm space between the window film and the edge of the window for easy scraping of bubbles and water.This window film will produce magic and beautiful colors because of a different light.Use the hair dryer to soften the window film first when it is cold, which can help the window film stick to the window well.Note:The privacy window film works only on flat, clean, and smooth surfaces. It will not stick on plastic, broken, or uneven surfaces.Do not suggest installing the privacy window film on a double-pane window that will be exposed to the strong sunlight for a long time