I agree that you dont want to go overboard with the makeup, but keep in mind, light will bounce off of oily skin and you dont want that in your pictures. I would recommend using some blotting papers before the shoot, also make sure you put powder over your entire face/neck area. You may even want your FI to do this (if he is up to it) Also remember that makeup does not stand out as much in photos as it would just looking at someone on the street. So I would apply your regular makeup slightly heavier. This way it will look similar to how it usually does. If you do not use makeup regularly then I would strongly suggest getting it done by a proffesional, making sure that you tell them it is for a photoshoot.