Its been a while since I've been Blood Spec but I do pull 8k on single target non gimmick fights as UH.
Anyway is GoD the glyph to have? I though Dark Death glyph was better.
Necrosis is a much greater dps gain that NotD since as blood you rely little on the pet and the dmg it does is almost insignifigcant.
Arp, you need more of it. Blood relies heavily on physical dmg. The more Arp the better. Try and get the trinket from reg ToC because it will do you much more good as blood than Mirror.
Lastly, I think anyway you are abyssmaly low on expertise. Exp cap is 26, you're at 10.
http://www.wowarmory.com/character-s...h&n=Tarquinius