I know it's time to stop making these pieces when I'm playing Freecell in the last 15 minutes of my shift. Now I have to spend some time going through my existing stash and planning for what materials I'm going to need to bring something like these studies to life full sized.
And, Elizabeth! Who said you could be peeking over my shoulder when I am scribbling in my sketchbook? I am also reading a novel with a thrilling description of a horse race. The note says "horse parts lines".