Your hit rating is 38. That's *really* low. buy the T9 pants www.wowhead.com/?item=Turalyon's Legguards of Conquest , and the Valor Badge tanking neck : www.wowhead.com/?item=Shard of the Crystal Forest That will give you 87 more hit rating AND nice upgrades.

IMO your gemming is really odd. Your gemming for parry / dodge where I would gem for HP. I've got about 2k more HP on my paladin and I'm only gemmed for meta requirements (parry/stam) and then 2 exp gems, and the rest pure stamina. Don't put too much emphasis on socket bonus. And IMO, for tanks, go big or go home, epic gems or bust. They're expensive, but worth it, I'm still waiting on anther xmute to get my paladin another red gem >.< Also, considering getting the www.wowhead.com/?item=Formula: Enchant Weapon - Accuracy enchant on your MH. www.wowhead.com/?item=Scroll of Enchant Weapon - Blade Ward is probably better, but I find accuracy helps out especially when you're low on hit rating. I'm at 288 hit rating, but I am using www.wowhead.com/?item=Sphere of Red Dragon's Blood since I haven't come across another tanking trinket yet.

Hope this helps.