I have created a new product available for download here. It’s a cool collection of Medieval Metal Layer Styles for Photoshop. Many of these styles use real images (photographs) of corroded copper, burned metal, green patina and other cool textures. Check out the screenshot showing the styles in a large high resolution usage.
NOTE: The fonts within the .psd file are: LHF Mister Kooky, Copperplate Gothic Bold, Leaf, Danube
Contact me if you have any questions!