Watch these videos that give nice makeup demonstrations:
According to People, Kate did do here own makeup for her wedding, BUT had taken several private lessons with London makeup artist, Arabella Preston. "She's had about three or four lessons with Kate at her private flat in Chelsea and has also gone, very privately to Clarence House," wedding planner, Mark Niemierko told People. Source
the knot wedding beauty tips:
"If you’re doing your own makeup, it is a good idea to schedule a makeup lesson with a licensed professional to teach you everything you need to know about bridal makeup and makeup in general. This will give you confidence and knowledge that will last way past your wedding day."
-- Kirsten Brusse, Joli Visage, Providence, RI
Do this at least two weeks before your wedding day because even a gentle can cause drying that may be annoying to apply makeup over. Also make sure you experiment with tanning WAY before your wedding date! We don't want RED or ORANGE brides!
Another great idea is to make sure you get a diagram of what you want for your wedding after you have your trial so that the makeup artist remembers what you liked or for you to take home and try to replicate.