Random suggestion, if you use maybe an epoxy resin as a base to make that foam nice and solid and follow up with multiple layers of a metallic paint with drying time in between obviously, and then detailing on the edge for a scuffed metal look followed up with a few layers of clearcoat it'll turn that foam into something that looks almost just like metal unless you get right up and thoroughly inspect it (and even then it'd be hard to tell). Looks great as is, but you could push it over the top and blow some minds!