Journal
Talk usage and credit before the shoot
Where the photos go and who gets named are easier to agree on before anyone picks up a camera.
Credit everyone
Ask each person how they want to be named and where. Credit says who made it; it doesn't hand over the files or extra rights.
Keep drafts private
Drafts, originals and agreements stay in your library or project until you're ready. Before posting, check the crop, caption and credits match what you agreed.