Photography Reference - Take pictures of real abrasions, bruises and cuts FOR REFERENCE. If possible, take pictures during the healing process. Keep a file of actual facial features, beards, moustaches, noses, eyes and what ever else you can think of as well as wounds and burns etc. These can be invaluable.
One of our favorite make-up renderings is on the actor 'Jeep' who played "Bane" in the movie "BATMAN AND ROBIN" starring George Clooney, Arnold Schwarzenegger, and Uma Thurman. In this movie, Academy Award winner Ve Neil was the designer and head make-up artist. Rick Stratton and Brian Penikas did the intricate make-up on "Bane" using REEL Body Air Brush Inks. Even though the make-up took approximately 3 hours to render in the mourning, the 'after lunch' touch up's usually took about 20 minutes. Reel Body Art Inks really last. GET REEL!