Looks super rad Nero. Really nice depth, colours, and atmosphere...
Might benefit it if the smudged c4d's, the orbs, and the background were shifted down 50px or so, and then crop that much off the top of the tag? Wouldn't matter too much if the arm was cut off, and it would look good slightly slimmer.
Try creating a slightly whiter, and brighter, area on the orb as well? A lighter and stronger glow essentially.