Whether to divide the wall in four imaginary parts and decorate it with four contrasting wall murals or tapestries, or to make do with the decals or stencils is a dilemma that you need to solve.
How about putting them in 'V' shape? This will divide the wall in three parts, upper, 'V' and the lower part. You can also put them in an inverted 'V' shape, with the plank, largest in length at the bottom and smallest length at the top. While choosing the color and lighting, take into account the color of the wood planks, and texture.