I like it, but agree with the other comments. The dark brown needs to fade back further towards the sandy / tan colour to really give impression of a reflective surface. But a good effort nonetheless.
I think you pulled the silver metallics off well, but the brown seems off, or too 'soft,' or something along those lines which makes it look like a restaurant mural rather than a reflective SENMM, but great try and very clean overall.
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