Drip rail moulding goes on nice and quick. The only tips I can provide is to start at the rear to make sure it is located properly, and lip it over the top and snap it over the bottom. You can use the heel of your hand or a small piece of wood or something that will not mar the moulding as you work it on. Set it over the drip rail frame and push it on as you would do if you were working out the air bubble under a sticker or something like that!! It should go on easy enough!! Good luck with your project, Geof