As an ancient art, copper art with copper door, mostly through relief, hollow, forgedafter the patterns and designs.
Classic animal of the Dragon, Tiger, Phoenix, tortoise and the four beasts and the lion, Unicorn, deer, cranes, Mandarin ducks, flowers and plants, or supplemented with text decoration abstract patterns, placing people evil, driving good wishes, prayersand other evil.
Copper is a metal extremely stable, it has very high corrosion resistance, routine care for as long as you can. However, copper is a natural antiseptic, but when large amounts of sulfur and sulfides, are prone to chemical change.
So, you need to remind you that, copper doors if used outdoors, as Villa door, you want to wrap it within the frame of the door, protected from rain and snow showerfell, preventing the corrosion of sulfide in precipitation.