 When I’m working in a sketchbook I like and am having fun, I hate wasting paper so, I will work and rework pages that are full of doodles only meant to quickly demonstrate a technique. Occasionally, those pages become real exploratory exercises on imagination and improvisation. This was just such a page. Pitt Artist Pens on Clairefontaine Goldline sketchbook. Below are shots of the page as it developed.
