Following the advice of Jim Butcher, and more advice from Mrs. Wright, I have devised a Rubric for Scene Creation. It goes thus:
Payload: What is the moment in this scene that changes the story?
String: What is going on in contrast to the main action?
Trick: Why do we expect a different Payload?
Life: What activity brings the background to life?
Goal: What the protagonist wants and why.
Opposition: What the antagonist wants and why.
Outcome: How things go wrong (or, less often, right).
Remember to get inside the viewpoint character’s head. What is he thinking? Feeling? How would he describe it?
How it Works:
You fill it out, then you write the scene, keeping the whole in view.