Some sectionals allow you to add or remove pieces or sections to fit in smaller rooms or extend the sofa in a larger room. The way you arrange your sectional can become part of the room's decor. For example, use the sofa as a room divider if the room opens into another space by placing the back part of at least one section toward the other space. Add a sofa table or low bookshelf to display knickknacks, plants, pictures or other decorative accessories. Alternatively, place the sectional at an odd angle if there's enough space.
Dress up the sectional sofa with throws or pillows in colors, patterns and textures that differ from that of the sofa. Add only a couple of pillows in contrasting colors or patterns if the sectional has a lot of pillows already, or as many as it takes to make the sofa more comfortable and visually inviting. For example, a white sectional with a bunch of white pillows can be dressed up with patterned pillows or bright pillows that match the rest of your decor. A throw can be draped over one arm of the sectional or an open chaise if your sectional has one, which adds to the look of the sofa and keeps a blanket handy for cooler nights.
Decorative items placed around the room may seem to fade into the background though they should complement your sectional. Hang artwork behind the sofa that complements the style of the sectional -- such as a modern painting for a simple sofa with clean lines -- and that contains at least small bits of the color of the sofa. Use simple things, such as plants or small trees, to decorate around the sectional. Place a tree on one side of, or behind, the sectional instead of an end table.
Accessorize your sectional by placing an interesting rug in front of it. Use colors and a style that complement the sofa. Use an ottoman or coffee table that complements the size and shape of the sectional. For example, place round footstools or a round coffee table with a sectional that curves or a square or small rectangular coffee table or ottoman with a sectional with a standard 90-degree angle. Mix it up if you want contrast, such as a round coffee table with multiple round pieces staggered on top of each other. Nesting tables can look interesting and save space when you don't need the extra space, and they easily spread out when you're entertaining and need the space for drinks or games.