TalentsFollow

DA is not beyond helpful for anyone, the extra armor is not noticible, tank without it and you'll see. Do yourself a favor and drop that in favor of One-Handed Weapon specialization, because that generates more holy damage (couse of course that's where the threat is!)

Imp. BoM is also a waste of talents, the extra AP is marginal at best, and you will be judging and sealing a lot more than using BoM, pick up Benediction. You also shouldn't even be using BoM on yourself when tanking, I would rather have BoK, BoW, BoSanc, and BoLight (if I had a paladin healing me) before BoM. You also shouldn't be giving BoM to dps unless there is 2 paladins in the party, give them salv.

I would also advise against Imp. SotC, you shouldn't need it in order to hold threat, and Imp. Judgement will help you out more towards that end. (Doing this will give you a free talent point, so now you need 10.

After that, max out Deflection(5), max out Spell Warding(7), Max out Guardian's Favor(9), and throw the last one wherever you want,

Oh, and what aura do you use?

Ret aura on trash, Devo aura on particularly hard-hitting bosses. Resistance auras if needed.