To be honest, you have no glaring problems, and very few things to even nitpick.
1)Switch the rest of your gems to epic gems.
2)Weapon Enchant-I recommend Blood Draining
3)Drop Glyph of Revenge in favor of Glyph of Devastate
4)Level up your Mining/BS-You're missing out on a free 120 stam(60 from mining, then 60 more assuming 2 30 stam gems in the BS sockets)
5)I would switch the cloak enchant for the +225 armor one as its a bit better for EH
If I was short a tank for a raid, I'd take you along.