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First, I drew glue lines along the spine of the frond, then drew a few lines down the centers of the leaves. After it dried overnight, I laid a sheet of foil on it, rubbed it a little, and amazingly the glue was covered with shiny gold. Since I seldom want to stop with just a little shine, I mixed fabric medium with gold metallic powder, and painted that on more leaves. (It's a little hard to see in the photo, which I took with my iPhone and my hand must have moved a little.)
I like what I got and will use this technique again.