Plot board

I'm not the only writer I know who has trouble organizing her material--especially when you get above a certain page count and revisions start mounting, it can be brutal, keeping track. 

So I created this: A plot board, is what others call it. I've been writing down on a mini-legal pad what's going on in each chapter, but I work better with visuals so here I color coded what's happening in my memoir. The light pink represents the far past. The light pink, the recent past. Little orange slips are photographs, etc.  (I blurred out text on the Post-its....)  If I need to move the Post-its around, I can. What is in ink are the lines of the squares.  What do you do, to organize?