Your reviewer gets the invoice, purchase order, and exact differences in a task that's ready for a decision.
Your reviewers get a dated task for the current proof, with the decision they need to make before launch.
Your reviewers get a clear task for the current proof. They know what decision to make and when it is due.
Your reviewers get a clear task for the proof decision, with the link and due date from the meeting action item.
Your reviewers get a clear approval task on the submitted proof, with the decision to make and the date you requested.