To write a biography about a famous person, start by researching their life in-depth. Gather information from credible sources like books, interviews, and articles. Focus on key milestones, achievements, and personal details, such as early life, career, struggles, and contributions. Organize the biography chronologically or thematically, ensuring it highlights the person’s impact and legacy. Include quotes or anecdotes to add authenticity. Be objective, presenting both strengths and weaknesses, while maintaining respect for the subject. Finally, proofread and edit the biography to ensure clarity and accuracy.