1) The document discusses conventions used in thriller movie trailers such as fast editing, tension-filled music, voiceovers, and low key lighting.
2) It analyzes trailers for Scream 4, Memento, and Taken as examples and notes conventions like fast pacing, ambiguous shots, and music/sounds that create suspense.
3) The author concludes their film trailer should use these conventions like fast editing, strategic music, and symbolic costumes to effectively communicate the thriller genre.