The width and length of the artwork you choose should measure within the range of these calculations.
Another thing to consider when selecting artwork is how high it will hang, whether on a blank wall or above a piece of furniture.
If you plan to hang artwork above a sofa, dresser, or headboard, the bottom of the piece should hang 6 to 12 inches from the top of the furniture.
If you’re hanging above a fireplace, 3 to 6 inches above the mantle will suffice. Select an artwork with a width larger than the fireplace opening, but smaller than the mantle