DO have your makeup done by a professional (if not, at the very least get a consultation and have them instruct you on how to achieve the look yourself)
DO wear waterproof eye makeup (it's going to be an emotional day!)
DO highlight your cheeks with light blush and bronzer, even if it's not part of your daily routine. It will provide a nice glow to your complexion.
DO curl your eyelashes. This will make you look more bright-eyed and awake. (Fake eyelashes may be used, but make sure they are properly applied. You wouldn't want them to rotate or peel off during the ceremony!)
DON'T wear heavy foundation! It will show in photos and is more likely to smear and get on your clothes.
DON'T wear dark lipstick. Stick with light natural colors that are similar to that of your blush.
DON'T wait till the day of your wedding to try out your makeup looks. Practice before hand to avoid a stressful situation.