Context
Context: who it was built for and why. Two sentences at most.
What was built
What was built: the pieces that exist in this edition, in plain words. Say which parts of the full product are absent here.
Screenshot or short clip
Screenshot or short clip
What is real
Say plainly what runs, what is mocked, and whose data it is. A project that is honest about being small reads better than one that pretends to be large.