film is for decorative reason, not for some protection
wash the window then mist the window with water and the back of the film apply it to the window then mist the front of the film and using a squeegee work the water and bubbles out of the film wipe up excess water let dry
The instructions are in the kit, but you clean the window first using a dust free cloth, put a mixture of baby shampoo and water in a spray bottle, cut the sheet to fit the window pane leaving about 1/2 in over hang on all sides. Spray the window and the back of the sheet with the solution and starting in the middle burnish the film down getting out all the air bubbles. Trim the sheet with a sharp razor blade and wipe up the excess water of the sill. Let it dry before trying to clean it and that's about it. Good luck
