We picked a pattern to try using 4ft long by 1.5 inch wide wood. It is in the molding area at Home Depot. We cut the wood into 7, 10, and 13 inch pieces.
Here is the design we wanted. So we could make adjustment we stared in the center of the wall and us one headless nail to nail in each piece of wood. It was easy to pull off and try again if we were off measuring wise.
In this picture you can see how it is a square box of 10wide 13 tall with 7 inch pieces on all sides.
Then we added just a flat 3.5 wide 4 ft long pieces of wood also in the molding department. After everything is in place then take a nail gun and nail all the wood to the wall.
Then really months later we got around to painting it. One coat of primer and 3 coats of white paint. Then we realized that we still have to caulk every single bit of wood on the wall. We were hoping the paint would cover a lot of the spaces between the wall and the wood but No. So with the painting and caulking it took 6 hours.
Then I repainted the top part of the area the same color it was but just a fresh coat.
paint and supplies $70