The document provides design specifications for a poster to advertise an event at an International School. It states that a good poster should include a logo, catch phrase, participation requirements, colorful yet simple design, and engaging photo. It contrasts good posters that include these elements with bad posters that are only words or pictures without sufficient context. The proposed poster design incorporates these guidelines, including providing brief but concise information on how to participate and event details, an engaging representative photo, and using creative fonts and colors to attract attention.