Sure enough, those 70's colors and decor are back.
My mother made this mirror back in the early 70's and I remember this project well. It was in a magazine and I bet one day I will find that magazine DIY article again.
On a one inch thick piece of plywood the mirror was adhered and then the design was laid out using string. The whole thing was covered in Gesso (except the mirror of course) and then painted. After that its was "antiqued".
I loved it then and I still love it today, especially the colors. When she offered it to me a few years ago I didn't hesitate. I bet it will pass down to my daughters too.
IF I ever decide to part with it, that is.