Gather an assortment of pillows for your couch -- opt for oversize pillows if you have a particularly large couch. Selecting an assortment of fabric colors and an assortment of materials gives your couch a sophisticated, textured look. For a contemporary look use bolder patterns and a good selection of solids, and for a more traditional look incorporate only one pattern, such as a floral or tartan, together with plenty of solid cushions that complement the couch.
Place the pillows in the corners of the couch -- add two or three, creating a pile. Have pillows of unique color and fabric in each pillow. This creates a soft cushion for relaxing and a stylish, picture-ready look.
Add single pillows, one per every second couch seat, elegantly throughout the couch. Reserve extra pillows for the loveseat and any other chairs in the space.