In searching online further about his process, I found a page that shows the shooting schedule, notes and scene breakdowns by Suzanne Schiffman for Pierrot Le Fou. I find it interesting to compare the documents to the final work to see the spaces that he found most appropriate for improvisation. I’m still translating it as my French is poor but thought I would share some images and the link with everybody.
There are many more scans on the actual page. Here is the link.