Do Couches Need Throw Pillows . For 24″ pillows, use 26″ inserts, etc. October 23, 2018 by jackie. Topfinel Cream Decorative Throw Pillow Covers 18 x 18 Inch Soft Solid from www.walmart.com For a balanced look that features symmetry, especially on your bed or couch, an even number of similar pillows, such as two or four, looks. You can use two matching cushions for a formal look or two that. You have designed this space with an arts & crafts flavor with its colors & accents of nature which is just right to this style of the decor.