I've produced artwork previously for risographs but those times I did the artwork in Procreate on my iPad and somebody else operated the risograph machine. I wanted a bit more unexpectedness so this time I'm preparing the artwork by hand - with marks drawn with pen, ink, pencils etc on A3 sheets. Three layers that will hopefully line up closely-ish in the riso machine! One black layer for each colour. It's a hotel used mostly by lonely travelling salesdogs.