Not sure if im in any position to judge, just picked up sigmaking again after a good 2 years Your border doesnt know what it wants to be, I like the fact that it makes the center image stand out, but the hair looks a bit off due to it, and a darker centralized border with space on all 4 sides with a lighter inside would work better I'd say. That said, it flows fairly well, though the left claw's background should flow in the same direction imo. I like it alot though.
It's great, but I think the flow is a little wonky, if you could have it all follow wolverine's flow it would look totally amazing. Oh also, lighting could be a bit more advanced.
Only complaint is the border - maybe if it was solid black or not there at all, just my view Very nice work though!