As any true Alien fan knows, Ridley Scott was all about storyboarding. See how an original storyboard for Alien matched up with the actual footage. If you're in LA, be sure to check out a special 40th Anniversary screening of the film at University of Southern California at 6:00pm (and take a look at the Alien Exhibition while you're there!) | Alien: Romulus

Alien 3 storyboard comparison: face to face | Alien_Theory