My tip on makeup comes by way of my wife. She used Francesca Lombardo for our June 2011 wedding. Francesca offers a 'trial' run that you can take advantage of prior to your wedding day if she has availability. In our case our wedding was on a Saturday and we had planned a casual rehearsal dinner for the Friday before for a lot of friends and family. Francesca did my wife's hair and makeup that night before our dinner so she could get a feel for how things would look on wedding day.
So... everything went fine, but our suggestion to you is after your trial, take a lot of pictures with flash so you can see if you like the way things will come out with regards to your chosen color and foundation choices as viewed from a camera lens. In my wife's case, she felt her foundation looked a bit too white so she had Francesca adjust things for wedding day after showing her pictures.