Don't really matter as it will all just melt away once the Yorkshire flag is up.
I've been thinking along the same lines. Mine is our back room/ office. I project Zwift onto one wall , one has the window so not much left and that's taken by a massive Snoopy print (plan of death from Mrs73 if removed) and one is wall to wall shelves. Love to go all out like some that's on the net but can't. Think the big Yorkshire flag may just about fill the wall I have left.
If you fancy having some one off personal cycling art made try marksanderson.art met him at the bike show nice guy and his illustrations are quite cool too.