The document provides guidance on using feedback to improve a game design plan in four key areas: client requirements, target audience, equipment, and legal issues. It emphasizes understanding the needs of the client and target audience. The client requires the game to be suitable for 9-11 year olds and include certain features within a 5 minute time limit. Feedback should be used to strengthen the description of how the design will meet client requirements and appeal to different genders. Legal issues around copyright and content ratings must also be considered.