Start with context
Explain who the work was for, what needed to change, and what success looked like before showing the solution.

A strong case study explains the problem, the constraints, the decisions, and the result. Screenshots are useful, but the story around them is what helps a client trust the work.
Explain who the work was for, what needed to change, and what success looked like before showing the solution.
A project page becomes more valuable when it reveals tradeoffs, iterations, and why the final interface works.