Clean the area where the decal is to be applied with alcohol real well to remove any wax etc. Then get a spray bottle and fill it with water and a few drops of dish washing liquid. Spray the area with this solution and also the back of the decal after you remove the backing paper. Apply the decal and use a plastic body filler applicator to smooth it out and to also remove any trapped air. Let it dry for twenty four hours and then apply a coat of your favorite wax or polish. Then stand back and admire you finished job. Pretty simple.