The idea of scenes as building blocks is an easy concept to understand, but it’s not easy to put into practice. The stories or scenes not only have to be factual and true (You can’t make them up!), they have to make a point or communicate information, as I have said, and they have to fit into the overall structure of the essay or chapter or book. It is often a daunting task. But it’s essential.
This sounds like an extremely hard genre to write! It will definitely be a challenge!