You can also tell that the drawings are just more... solid than the previous ones. The "Softies visual style" developed in such a way that I wanted to make objects feel very material and solid and shape-y, rather than wiggly and airy and line-y like the previous sketchbook scan (these are the high brow art terms I think in). You can especially tell that Kay's hair has changed from a mess of lines to a radial arrangement of a few half-circles.
Also she has Euclid's hands in the top right, because I was working on a test story where she has Euclid's hands. I might post those pages someday, they have a couple good jokes despite looking really strange.
[This post was made public in July 2016. Become a patron to see a new one every week!]