1. Ensure that the stainless steel grain direction is correct. Otherwise the metal mosaic will exhibit a difference in refraction. 2. The installation must be clean and level. 3. Apply the adhesive with a straight edge gray knife. It is best not to exceed 15 square feet at a time. 4. Wipe the adhesive with a toothed ash knife. Press down so that the teeth touch the mounting surface to ensure uniform thickness of the adhesive. 5. Allow the metal mosaic to adhere to the mounting surface for 24 hours. 6. Curing with a professional caulk for 15 minutes. 7. Clean the metal mosaic and remove the stains. 8. Spray a thin transparent varnish on the metal mosaic surface (available at all building hardware stores). CHANGZHOU CLD AUTO ELECTRICAL CO.,LTD , https://www.cld-leds.com