Here's a link that tells you how to do it:
JoAnn: maybe this will help
Check RustOleum paint line. They have a beautiful copper paint and even have a hammered line of paints if you want that look. Then you can add the patina effect with black and green-ish paints.
Here's some more
Here’s 3 easy ways to make copper patina yourself! https://www.frugalfamilytimes.com/2019/11/how-to-turn-copper-green-patina.html?m=1
Here's a post that might help - https://www.youtube.com/watch?v=ihDzLvlo2jw
Hi Ann, here are a few ways to achieve this, hope they help you out!
This post might help
Rub and Buff has a copper patina finish. I use it all the time, it is beautiful.
Try Copper Spray paint and then dub over it a brown to dull it down and a green for aged look............Have fun, Practice makes perfect!
I find spray paints work the best to get a hard finish. I recently painted my towel bar and toilet paper holder gold and it looks great. Here is a whole post with spray paint ideas. https://lifeonsummerhill.com/spray-paint-project-ideas/
Here is a post on how to do it with spray paint. https://www.youtube.com/watch?v=RjiPjrqe2J0