After removing the window and wooden moldings, I used the removed fabric "wallpaper" as template for the new wallpaper. The bathroom is a tricky room to paper after assembly because the wall is interrupted by part of the slanted roof.
I used a dark brown fabric to cover the wall, so that the cork sculpture would contrast against the solid dark background. I used the back of the brown fabric, because it looked like small brown tiles. I used this fabric also because I did not have a piece of the original fabric big enough to cover the back wall ;)
This is what it looks like after the wall was redone and the moldings back up.
Doesn't the cork sculpture look lovely against the dark chocolate wall?