Wing Design 3

Just a digital version of my original Wing Design.  You can see both versions in Design Mess located in My Sketches folder and the neatly cropped version in my Abstract Dump folder.  Still having trouble with metallic colors in flat designs.  The grey here represents metallic silver.  If someone could show me how to make metallic colors that look shinny on a flat design that would be appreciated.  This is a stamp it on anything design, no meaning, just decorative.  It even can be used as a tattoo.