Lexi, I will pass on to you what Duki passed on to me.
Pull packs of 3-5 where you can. Preseal with Wis and lay down a max rank Consc. Start whacking the biggest dude in the pack, judge and reseal Wis, rinse and repeat until you win. Also, it is rarely (if ever) necessary to have 100% uptime on Consc. for pulls of less than 3, precast HS, pull with JotC, and use SoR. Consc should not be necessary with only 1 or 2 targets where you can get just as much threat by using HS, Redoubt, and BoSanc.
Where me and Duki differ in style is that I always keep 3 ranks of Consc on my hotbar: Rank 1, Rank 3, and Max Rank. Duki only feels the need to use Max Rank. Duki is also more experienced at Vanilla Pallytanking than I, and is good enough at managing his mana that he has main tanked raid bosses without popping mana consumables, didn't lose agro, and didn't go oom. Point is, not ALL of whet works for him may work for you.
Using this advice, I tanked DM East yesterday without stopping once to drink, and had no mana issues. I also held good (not perfect) aggro against a group that included a 58 Rogue, a 58 Mage and a raid geared Fury Warrior with 2 glowing weapons as DPS. I was 56. Point is, with me tanking using the tactics I just listed, we blew through there so quickly that we decided to reset the instance and run it again. Granted, we also all had KTM running, so it was easier than usual to properly manage my mana by properly managing my aggro.