The document discusses conventions used in psychological thriller media such as films and posters. It notes that psychological thrillers commonly use the colors red, black, and white to connote danger, violence, and mystery. Low-key lighting is also used on main subjects to create intrigue. For a poster, the author used close-ups of worried protagonists and dark colors in line with these conventions. The double page spread also followed conventions like a 12-point font size and large central image, while adapting the vertical image to a single page.