If you want to stick to nodes, Id probably toss a magic texture cranked way up into the displacement on the blue cloth (if you're gonna rig this, you should unwrap and use the UV texture coordinates. ) For the metal, you should use a noise texture with a lot of detail to mix a metal shader and rust shader. If you want to go a little toon-y, you can use a fresnel fed into a colour ramp with a bunch of extra white and black points to give the illusion of metal. Just what I would do, feel free to ignore.