So, smaller works out pretty well if my pens are fine enough. I pulled out a set of India ink markers from Faber Casteel. I was able to get the level of detail I wanted with the smaller format circle. This means smaller doesn't take less time, doggonit.
What I love about this doodle is the flagella on the edge. This is an effect that's long fascinated me. I don't care so much about what's in the circle, much preferring an image with some focus. We shall see what tomorrow brings.