If you want the portrait to be more flattering, you may want the subject to apply some white powder makeup to their face, in order to compensate for the paper's relative lack of sensitivity to the long wavelengths. This was where the use of white pancake makeup first became popular, due to the early motion picture film being orthochromatic or actinic in sensitivity.

Alternatively, you can try a slight bit of over-exposure on the skin tones, but be careful, as it's easy to blow out the highlights, especially with shiny, oily skin. Another reason to use makeup.