Where his pecs meet his arms looks funky. Normally there would be more separation and they'd insert under his deltoids higher up. So more of a U shape for the base of the pecs rather than straight across. Then on his back you've got a similar thing going on with the teres major/minor - those don't run into the arm that way.
The lower section where his biceps run into his forearms also looks odd coming to that sharp edge/point.
To illustrate I was trying to find some better shots of arnold but here's a turnaround that might help http://www.health-today.org/wp-conte...011/10/as8.jpg
or just any standing pic of a bodybuilder will work as well http://www.dumbbellsweights.com/wp-c...ay-cutler1.jpg
And what's up with those boots? Are you going to break up the fur bits more as well? Like have more overlapping onto the boots or cloth? or are you planning on doing that with alpha planes?
Smooth out those creases in his pants too, they look a bit blobby.
How does that one hanging belt with the metal studs connect to anything? Wouldn't those belts pull on the fur stuff beneath them so the fur wasn't quite so symmetrical and flat across? and is the fur all one piece? Is it wrapped around him and folded over itself? or sown up so that it creates a cylinder around his mid section?
I think it's coming along really nicely but I think if you push it just that little extra bit it'll turn from a nice portfolio piece into an awesome portfolio piece.
p.s. Please finish scifi conan as well