Good case studies explain the conditions around a result. They show the starting point, the choices made and the limits of what can be claimed.
Show the reasoning
Readers learn more from the path between challenge and execution than from a gallery alone.
Label demonstration evidence
Templates should make fictional content unmistakable. Real agencies should document sources, timeframes and calculation methods for published metrics.
End with relevance
Connect the story to the kind of question a prospective client may be considering, without claiming the same outcome is guaranteed.