I can tell I haven’t really gotten into the flow of a scene when all my paragraphs are of the same length. Long paragraphs and short ones are part of the dynamics and tempo of narrative; with no variation, everything’s at the same volume, the same pace. When they start contrasting more, it’s a sign I’m doing something right.
From this insight, I conclude I’m going to have to rewrite the first five hundred words of this scene.
But that’s a job for later.