The document summarizes key techniques used in trailers and posters for horror genre films. For trailers, it discusses the use of editing techniques like ellipsis and montage to create a sense of rush and panic. Close-ups are used to show facial expressions of fear, and camera angles are manipulated to indicate which characters are dominant. Fade to black links scenes to build suspense. Posters also employ close-ups to elicit fear through facial expressions. Lighting is low key to create mystery, and costumes are often dark. Props are rarely shown except to depict a character's vulnerability.