Clean your windows thoroughly with an application solution or a mixture of 1 teaspoon of baby shampoo to 1 gallon of bottled water. Use a solution of tear-free baby shampoo and bottled water to provide the correct pH and final clarity to your project. Never use any cleaner containing vinegar or ammonia to clean the film or windows, as this could damage the film. Scrape away any paint or grime. Spray the window again, clean the glass with a squeegee and dry the glass and window frame with a microfiber cloth.