The document summarizes the key things the author learned from creating a 3-minute thriller film for a media studies course. The author learned about including suspense and twists to engage the audience, as well as techniques like camera angles, editing, and using technology like iMovie. The author also realized how much preparation and effort goes into crafting each part of a film. By researching thriller conventions, the author gained an understanding of what makes an effective thriller and how to attract the intended target audience.