Naturally, after tackling "The Workwoman's Guide," I went and hit up Project Gutenberg to see if I could find a copy of "Bookbinding, and the Care of Books" by Douglas Cockerell, which was printed in 1901 and considered a pretty good reference for bookbinding.
I reformatted the whole thing in Word (which is surprisingly good for automatically splitting up a whole document for bookfold signatures).
For the cover I used a homemade bookcloth I made using a green linen, and a book glue I made using tapioca starch of all things. I had previously tried making book glue using fabric starch, but overcooked it and it was a little too thick to use. Starch is starch though, and the tapioca starch worked just as well.
The end sheets are a proper marbled paper I ordered through binding supply place down in NSW who's name escapes me at the present. There's not many binding supply places here though, so they're not hard to find 😅