For a 3D generalist, stakeholder signoff is mainly an ownership decision. The page should make clear what this role approves, what it only prepares, and who receives the asset next.
For 3D generalist, write pass-or-fail conditions that another reviewer can repeat. Attach the tested file, destination version, observed result, and owner rather than approving the asset from screenshots alone.
Present the tested artifact, decision summary, known limitations, and rollback path in language a non-specialist can approve. Apply this stakeholder signoff guidance to the actual 3D generalist delivery path.