Writing a biography involves several key steps. Start by conducting thorough research to gather facts about the subject's life. Create an outline to organize the timeline and key events. Focus on capturing the person's character, achievements, and challenges. Write in a clear, engaging style, blending factual details with compelling storytelling. Ensure accuracy by verifying facts and using credible sources. Finally, revise and edit for clarity, coherence, and readability, ensuring the biography offers a balanced and insightful portrayal of the subject.