Years ago, I spent a teenage summer as an apprentice in a rural summer stock theatre, the theatre being a converted old barn. My job was to line up the various props for the particular play in production. During performances, I was stationed under the wooden auditorium floor.
From that location, I could hear the actors’ voices, and the progression of the play. I also realized that I could gauge the audience’s engagement with the particular performance on a given night by the way the audience moved their feet. The wooden floor and the empty space below—where I was—amplified those feet movements. The better the performance, the less feet movement there was. A poor performance brought constant movement.
Fast forward to me trying out a new book—reading it to a middle school class. The listening kids are always polite. However—when my story flags, or becomes obscure, or in any way less engaging—I hear feet begin to move. Not one restless child, but a lot of them. Having pencil in hand, I mark X next to that “restless” passage even as I continue reading
Back at my desk, I cut, edit, or in some fashion rewrite that movement-inducing passage.
Read your work aloud. Always pay attention to footnotes.