Define what the previs must answer
Limit the previsualization to specific pitch questions: can the audience follow the reveal, does the camera path support the message, is the sequence pace plausible, and which production beats need further design? State that the output is a concept artifact, not a finished campaign, capability benchmark, or customer result. Identify protected brand claims, unauthorized likenesses, product details, and licensed material that must not be invented. Assign an owner for factual and rights review before any draft is shown outside the working team.