Choose a clear topic
Define the purpose of the documentary
Research the subject thoroughly
Identify the target audience
Develop a strong angle or story
Create a treatment or outline
Plan the budget
Secure funding if needed
Build a production schedule
Assemble the crew
Obtain necessary permissions and releases
Prepare interview questions
Scout locations
Gather equipment
Conduct interviews
Capture b-roll footage
Record ambient sound
Organize and back up footage
Review and log all material
Edit the story structure
Add music, narration, and graphics
Color correct and mix audio
Review and revise the cut
Export the final version
Distribute and promote the documentary