Repainting metal patio furniture via blog: 1)use wire brush/sandpaper to get off loose paint/rust, 2)wash/wipe down and dry, 3)prime, 4)paint with spray paint designed for metal. Blog suggests Rust-oleum paint throughout.
Here is an example of stencilling where no paint is used. Rather, you stencil with varnish, and then stain. The stain doesn't 'take' to the place where the varnish is (so it comes out clear wood color). This is delicate and pretty. I want to paint a loom.