Develop two thorough personas (with pictures, background bios, etc.) for your app. Your description of these personas should be rich enough that we believe they are a real person. A bulleted list of things they do doesn’t cut it; you might use a list or table to capture some information in concise form (name, age, etc.), but the biography should be several paragraphs long, and tell a story about this person that helps us really get to know them.