Elegant homes, regardless of period or architecture, have one thing in common--custom millwork and mouldings. Great millwork is what takes a basic box of a room and transforms it into anything you want it to be--an traditional English gentleman's study, a Venetian dining room, or a French boudoir.
You're familiar with the standard sorts of millwork--the basic baseboards, quarter rounds, crown molding and the like. But to really bring your home up a notch or two, consider some of the more unconventional options. They'll give your home a huge style boost without a huge investment.