1) Horror film trailers use conventions like setting films in suburban homes and including jump scares and stings to effectively frighten audiences.
2) Details like costumes, props, and body language in the mise-en-scene help audiences engage with the narrative and understand what is happening.
3) Horror trailers aim to disturb and intrigue audiences using conventions like sans-serif fonts, dark imagery, and leaving questions unanswered to encourage viewers to see the full film.