Here is what I did to get the finished product:
- Taped off mirror to protect against damaging (sanding, painting)
- Sanded mirror (first with 90 grit then with 160)
- don't sand all of the original finish off [this gives it that "antique" look]
- Mix white wash mix (1/3 paint - 2/3 water)
- Apply as many coats as it take until the white wash is to your liking
- Let dry!