The walls are lined with poly batting using a staple gun. The fabric is then applied also with a staple gun. The accessory is the contrasting gimp or piping applied with glue gun over the staples. The wonderful part about wall upholstery is it covers wall sins, such as wall cracks and layers of wallpaper. Sound proofing and energy efficiency are two other claims to fame.
Nothing looks like an upholstered wall.
After your paint and or wallpaper, don't forget the wall accessories. There is so much art work, tapestries, wall sculptures, and floral arrangements available today, fill your walls. Remember the motif must coordinate with the theme of the room. Don't hang a picture just because you have always had it. If it doesn't go with the theme, get rid of it.