I am a life caster near NYC.. recently I've been contacted by several plastic surgery patients (for rhinoplasty) in order to cast their faces for reference for the doctor they choose. This may be a great alternative to using something like Photoshop for you. How it's worked is: I take a mold of the person's face, then make 2 casts from it. One cast remains how they originally look before surgery (or if surgeries have already been done, then it serves as a new starting point), then the 2nd cast- I work with the person getting surgery to resculpt their nose/face. Then the person brings these casts to their doctor and the Dr. bases the surgery on the resculpt. People only ever see themselves in a mirror, never 3 dimensionally, so it enables a person to see exactly what they Really look like- even their pores, scars, wrinkles, etc...
I can direct you to people who have had this done for these purposes. They all have said that they are much more confident about having surgery done after this process. Feel free to contact me with any questions!
Gravenstine Studio Fine Art and Life Casting Studio Entrance Page