I've resorted to Post-Its!
As I sat looking at the painting, and assessing what still needed to be done, I opted for a quick solution to tag the notes - Post-It notes. I am pleased to say that by the end of the day, I was down to 8 post-it. :-)
My goal was to complete this painting by the weekend, so I'm on track. Then I still have a day to finish the Eagle painting.
After that, It's back to selecting the next image and size of canvas!