It looks good, but I think the signature needs a better text placement, a better depth, and a light source. Otherwise, it's a decent signature. ♥ Muse.
I like the lighting, and I also like the textures you used. But you're flow is like nowhere to be found. On a side note: Why does everyone like Muse so much? I think they're good but not something amazing.
i used a c4d for the first time ever, forgive me for the lack of flow and my user name is the reason.