They went on to say it’s “easy to assemble and sturdy," noting "each shelf will support up to 250 pounds, but I would lay down some 3/4-inch plywood if the weight will be focused in the center.
The method is simple: You create "visual triangles" using your books, decor objects, and other items that "draw the eye to the center or top of a specific shelf," as Lowry explains in their video.