How To Make My Room More Zen How Can I Make My Room More Zen-like Or Peaceful?

How can I make my room more zen-like or peaceful? - how to make my room more zen

I just want the quietest room in the house. So far, I got rid of all the chaos around him, and I want to give a natural look. I was with colorful stones, shells, Buddha, my advice is just for fun and could get a fake bonsai design.

What can I do to this design?
My mother said if I want to paint. I have a green carpet, and I want to match a wall color. Perhaps something like gray.