Keep a lot of loose powder on hand to touch up and play down any shine, especially on the T-zone.
As a professional makeup artist, be sure to bring along a couple of black and white tear sheets from the magazines to help demosntrate what kind of a look your client might like. Remember, this is black and white, and saying you’ll use a pink lipstick makes it hard for your client to interpret exactly what kind of a look you’re doing.
Still not sure of the final results? You can always ask to see a black and white Polaroid from the photographer before you actually start shooting film. Just note that poloroids look softer then the film will.