Hope this helps

To turn copper green spray with 1/2 strength muratic acid. Sprinkle with kosher salt. Place in sun. With in 24 hours it will look like 100 years old.

In the summertime, spray it with a spritz bottle with a mixture of salt, vinegar and water every morning and night. Green in about 2 weeks. When you get the green you like, rinse it with a hot water spray twice a day for a week. Then polish it with felt or canvas and wax it.