This document outlines several conventions used in horror trailers, posters, and magazine covers. For trailers, it discusses camera angles, soundtracks, editing techniques, lighting, costumes, and themes. Common techniques include increasing editing speed and music tempo over time. Posters typically feature antagonists and use bold fonts and dark colors to convey danger. Magazine covers also feature eye-catching images and use reviews, articles, and incentives to attract viewers. Both posters and covers aim to summarize the film and appeal to audiences.