Answer:
Some will caution that refinishing an antique significantly reduces its value. If you want to retain the antiques' value, it's a better idea to clean the surface with a nourishing wax compound, such as Briwax, and leave it alone. The scars and marks the piece has earned over time enhance its 'personality'.
However, if you are bent on refinishing an antique, you must remove the dirt and wax and stain that have accumulated on it over the years, and reveal the bare wood. If the piece is intricate, you can invest significant hand-work time in sanding and stripping off these elements. Once you've reached this point, you can refinish it in whatever style/ colour/ taste that suits you.
Before you begin your refinishing project, it's a good idea to remove any hardware, which you'll replace when your project is finished. Conduct the project in an open, well-ventilated area, because the products you'll use to strip it down to bare wood are toxic and harmful if breathed.
As well, if the piece is unstable in any way, once you've stripped it, you may want to shore-up its architecture with hidden supports.