Jami Gold has an amazing resource for writers. Beat Sheets.
http://jamigold.com/2013/12/nano-wrap-up-beat-sheets-101/
Beat sheets provide a visual way of “tracking” our story and its structure. At this early stage of revision, we can ensure we have all the beats necessary for good storytelling (the 4 major beats and maybe the 4 minor beats).
During our big revision phase later, we can verify the beats create increasing tension and stakes. We can see where beats should fall page-count or word-count wise and compare that to our story’s actual pacing. Is our story too slow in places? Do we have unnecessary scenes? Or have we underdeveloped an idea or reaction?