Good morning,
I've tried to develop a customized proposal so that you can choose the colors and patterns that you like.
Although you wrote that in your house there are many rounded forms, I wanted to include more squared elements to break up the monotony of this long corridor.
I didn't search particular fabrics, probably you will find them in some knitwear factories in your area that they will be closed to your tastes and colors of your home.
The composition that I've proposed is just an indication: the distances and the dimensions could be evaluated according to fabrics and wooden boards that you can find in some local shops (I suggest you to take the same essence of the beams on the ceiling).
I hope that my proposal will be an inspiration for you.