I started doing wedding makeup as of last year when i did my own wedding in Greece. All i can say is PRIMER is key! If you want your makeup to last prime before foundation and set with fixing spray at the end. I recommend derma shield so your make up doesn’t slide off your face (we got married in Greece so it wanted to slide off in that heat let me tell you!
Make up should be a little stronger than you would usually wear so that the photographers flash doesn’t wash you out.