The document discusses conventions commonly found in short film posters. Many posters feature a large picture of the protagonist, with the short film title displayed prominently in big, bold font. Below the title is often the director's name. Production details like writers and directors are also included. Posters generally keep the design simple with a portrait orientation, minimal text, and cross-media references to promote the film across different platforms. The protagonist is central to convey who the main character is through lighting and positioning within the frame.