Explain what constitutes a "Contribution"
In the "My Contributions" first page define what constitutes a contribution.
This could get long because the information should be exhaustive. It will have to cover why some changes are not contributions and others not. Examples are why is detaching a duplicate "Couple may have children" Research Help a contribution, while digging into a historical document to glean a date for the event and entering it into the source citation is not a contribution.
Near the definition should be simple, easy ways to suggest changes that should become contributions. Patrons could suggest changes maybe don't rise to the level of a contributions. Managing contributions could allow FamilySearh help steer patron's work in the directions that help FamilySearh achieve its goals.