The document discusses what the author learned from their preliminary task to their full film production. They learned important lessons about effective communication within their group through using messaging to coordinate better. They also learned to improve casting, research, planning, use of social media, mise-en-scene, and editing skills. Specifically for editing, they learned techniques like using black and white for flashbacks and improving sound design. Overall, experiencing challenges in their preliminary task helped them identify areas for improvement and apply those lessons to create a stronger final film.