Relitively new to prot tanking

I decided i wanted a tank class so i made a prot pally having nothing but positive experiences with them in my groups on my shadow priest main. Up untill now ive had some oom problems but last night i had problems holding agro in mara. Im 47 and i think some of it stem from a lack of + dmg gear to up my holy dmg and my little mana pool at 47 i have about 1900 mana. I try and cast consecration when its up and holy shield and i judged righteousness on the mobs but i have 2 problems there 1 my mana... it poofs quick and 2 when im ae tanking i dont know what others are attacking. is there a desired rotation to keep the most threat for the least amount of agro? and is there any decent gear that i should be looking for before i hit outlands? I always have ret aura and blessing of Sanctuary on myself

http://armory.worldofwarcraft.com/character-sheet.xml?r=Bonechewer&n=Lilleroy
this is my armory link i havnet had a chance to make a sig

Any info would be helpful thanks

I very successfully tanked Mara on my paladin at 47-48. I found the easiest way to keep on top of aggro in the pre BC dungeons has been:

1) run in and Judge Wisdom
2) Drop conscecrate and pop holy shield.
3) Reseal Wisdom.
4) Repeat step 2 until first mob is dead.
5) Judge and reseal as each mob dies.

I try to run with Ret Aura up and Blessing of Wisdom. If there is another pally in the party, I put up Blessing of Sanc, and have the other pally put BoW. The mage I ran mara with was very happy to be allowed to Blizzard and Arcane explosion every pull. Didn't even need to put Salv on anyone.

Get yourself leader of the party, and mark skull for first kill. Have your dps focus on that mob first.

By then, your reflective damage should have given you a decent threat lead on the other mobs.
_________________
Official thread killer