"1. Clean off dust, dirt or other things before installation. Please keep the surface clean and dry. 2. Please remove a transparent protective film on the surface before use. 3.Measure the amount of protective film needed for the part to be fixed and cut the size 4.Use squeegee and heat gun to make it flat and reduce wrinkles 5.Use squeegee get bubble out, Cut off extra part 6.After finished assembly, please leave the car under the sun within 48 hours or do not wash the car in the meantime. Do not let the car stickers touch the water for 48 hours. "