Try this
- Define the smallest finished version and split it into pieces each person actually wants to own.
- Choose one place to record agreed contributions and clarify whether drafts may be edited by the other person.
A worked example
“For our weekend photo booklet, I’ll choose five pictures and you can write captions for the ones you like.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Do not mark a piece as complete on someone else’s behalf. If progress stalls, reduce the scope or stop without treating the project as a relationship assessment.