Recently I found a paint catalog placard used on the shops to "show" the different colors. Now, this placards are made of cardboard, but this is an old one made of a metal plate and different metal pieces painted on the different colors of the catalog.
It' was little bit rusted, and I thing "Oh, cleaned, and un-rusted, it can be a great painting!" (or something like that. Lol!)
Follow the picts if you want to see how I transform this rusted catalog in an amazing painting.
To do that, I only use water, vinegar, duct tape and black spray paint... And, of course, an old painting catalog.