Deep Inside: A Study of 10,000 Porn Stars and Their Careers
You may have to shoot the same scene 5 times, and you need to deliver and lines and show up at the right place every time.
What matters most is confidence on camera, not your look. If you find yourself confronted with such a fan then report them to police and notify your agency's legal department in case you need help filing for a restraining order. You need to be ready to get in the sack and be professional and cooperative.