Researching wallpaper

It's quite hard to find stuff on the internet about making your own wallpaper, as most of it's about putting it up in your house rather than designing/printing it yourself
though a lot of them use fabric as wallpaper like this which is interesting, and if i'm thinking about using fabric that could be relevant

This is an article about a wallpaper making course which has some good stuff in it
To make printing blocks, Hugh sticks lino on to hardboard (try builders’ merchants) with Evo-Stik. All his paints are Dulux matt emulsion and applied with standard paintbrushes. For the lining paper (also from builders’ merchants), use a grade of 1,200. Printing can be done on a dining table as wide as your roll.

This website has some nice examples (the person who takes the course above)