While there are many different approaches, a "wet install" is highly recommended. Start with by thoroughly cleaning and drying the window or application surface. Use a spray bottle filled with soapy water to spray to completely cover the application area. We recommend 1% soap and 99% water. Carefully peel away the backing and avoid letting the cling fold over on itself. Place the side that had the backing against the surface and apply the cling to the window. Use a squeegee or credit card to squeeze out access water pressing from the center outwards. You can spray more soapy water on the back of the graphic to lubricate the surface as you are eliminating air bubbles. Click on this link to check the Window Cling product page https://www.4over4.com/printing/clear-window-clings