To engage your audience, focus on creating a compelling and relatable narrative. Develop a strong beginning, middle, and end to maintain interest and provide a clear structure. Use interviews, voiceovers, or text to provide context and insights. Add variety to your visuals, such as close-ups, wide shots, and B-roll footage, to create visual interest. Finally, pace your documentary well by balancing the rhythm of dialogue and action with moments of silence or reflection.