This is fantastic. Can you share any details of how you created the pictures?
I am trying to do illustrations for a childrens book in a similar style (although I want much more detail on the pages) but all my attempts end up being a complete mess.
But even if you can't share deets thanks for the inspo!
It is most likely using a Lora - it’s like an add on for stable diffusion that forces a specific style. You can find them ready-made for all sorts of styles - including black and white line art. Or you can also train your own using a few examples of a style you want to use.