Accessories Glassware, bed linen and blankets, all Liberty, (0171) 734 1234. Table, Mark Maynard Antiques, (0171) 731 3533. Lamp, Porta Romana, (01420) 23005. Antique lustre-ware, Shirley Rothman, (0181) 550 8015. Picture frame, Habitat, (0645) 334433. Bedhead, to order, Cover Up Designs of Kingsclere, (01635) 297981. MAIN PICTURE: decorate a picture frame with large and small square nails. FAR LEFT: DINING FOR DOLLARS a plain card lampshade can be transformed by simply working out a pattern in pencil and pushing decorative nails through the marked points. LEFT: our shelf was found in a junk shop and needed repairing and painting before we could embellish it with plain brass upholstery nails.