Just as you wouldn't want to meet with a florist or photographer unprepared, you probably won't want to meet your bridal makeup artist without a game plan of how you want to look for your wedding. You will want to have all of your style elements in place; your gown and wedding venue will dictate so much of how formal your hair and makeup will be. (A flowy, bohemian dress at a backyard wedding would look a little odd with a tight, structured bun and a black smoky eye/red lip combo, now wouldn't it?)
Pinterest can be a good place to start, but try to go for the "big picture", rather than just overly stylized extreme closeups of eyes. Those are great "paint by numbers" tutorials, but you need to remember that these are painstakingly lit in a certain way and may look very contrived in real life. Photos from the Red Carpet are often a much more realistic indication of how makeup will actually look in broad daylight. If there is a celebrity you admire who shares your coloring, google images of her at awards shows to see certain looks she has done. These shots are also not as heavily photoshopped as magazine ads and covers so will manage expectations better. : )
I like to use colors from the wedding as inspiration. If your bouquet has lots of pinks, a coral lip will look "off". If your maids are in lilac, you may want to pull a bit of that into your eyes or lips. This helps everything flow.
It is a good idea to share with your artist whether you want your girls' makeups to somewhat "match".
A cohesive style can really pop in your photos, IF you can get all your girls on board. You know their makeup style; if they all love darker eyes, they will feel downright naked in a minimalist look. Conversely, if they are all makeup shy, they will be miserable in bright red lips! Recently I did a wedding where the girls wore charcoal and the bride wanted their lips to be bright sheer pops of red, coral, pink. Unfortunately, every girl wiped it off in the bathroom, even though they looked like moviestars. I had another wedding where all the girls did exactly the same sheer tomato red (it was a patriotic themed wedding) and it looked incredible. The girls were all thrilled that it looked great on everyone.
It may be easier to get everyone to play along if you give each girl her own lipstick or gloss for touchups; ask us how we can make that happen for you!!