Check forms for missing details, return them for correction. Every one is ready to run, and you can adjust it in plain language.
Mark duplicate creative files before the next team receives them.
You can review marked extra copies and their locations before handing a shared folder to another team.
Put size-checked JPEGs in the review folder for the next handoff.
Your coordinator finds JPEGs ready to share in the review folder, with a clear note when a file needs fixing.