No specific pointers, sorry. But...
There are (many) places that just do large scale fabric printing from photos or whatever image you supply. It might be cheaper to get something plain, or even uncovered, and get the fabric printed elsewhere.
I did some looking into this but didn't follow through since my wife just stays out of the room
. There is some issue with the type of printing you should prefer so it doesn't make the fabric "un-breathable" after it's done. Can't recall the details, but the prices I found didn't seem ridiculous, though it's been a few years probably since I looked around.