Six colouring books, original art throughout
Six 40-page colouring books - five for children, one for adults - each with original art on every page, and each also built as a 92-page interior for Amazon.
pages of original art across six titles, and zero of them blank - measured by rasterising every page and counting its ink coverage rather than by flicking through.
What was done
The hard part in a range like this is not the drawing, it is the shipping. Every title has to exist in several page sizes at once: A4 for printing at home, US Letter for the American market, and a 92-page interior with a gutter margin for Amazon KDP. One source, three page geometries.
Every page is rasterised and measured for ink coverage before it counts as finished, because one nearly-blank page in a 40-page colouring book is a complaint rather than a design. Zero of the 240 pages failed that test.
None of these books is laid out by hand. A 60,742-line Python toolchain imposes the page masters into each channel's trim size, generates cover wraps at the right spine width for the page count, and refuses to build when a page fails its gate.