File signed agreements, keep order receipts, bundle handoffs. Every one is ready to run, and you can adjust it in plain language.
Send packaging artwork proofs and record the revision shared.
Your reviewer gets the current image or PDF and a clear question. Your review card shows which revision you sent.
Log packaging proof decisions against the exact artwork file.
Your review cards show who made a proof decision and which file they saw. The reply time stays with the decision.