What are simple rules for choosing accent wall proportions in a room?

When choosing accent wall proportions, aim for one wall that naturally draws focus, often the longest or the one with architectural features like windows or fireplaces. The accent should balance the room without overwhelming, typically covering between twenty to thirty percent of the total wall area. Keep adjacent walls neutral to support the accent and maintain cohesion. Consider furniture placement and sight lines to enhance the accent wall’s impact without overcrowding the space.