To design "Living Well with Adult Autism," begin by defining the book's goal: to offer practical strategies and encouragement for thriving with adult autism. Next, research the needs and preferences of adults with autism and their support networks to ensure the content resonates with them. Incorporate calming and accessible design elements, including clear visuals and supportive graphics. Organize the content to address key areas such as social relationships, sensory sensitivities, and self-advocacy. Finally, gather feedback from target readers and experts to refine the design and ensure it effectively meets the audience's needs.