transfer points from Thunderstruck and Gag order to Imp. Heroic strike and Deep Wounds (you'll like the benefit from it)
change minor glyphs: battle and commanding shout to indimidating shout and bers. rage (mainly because you use shouts on cd anyways, while both glyphs i marked before can be usefull in different scenarios)
best way for you will be to change the legs armor kit to the epic one (dependant on your expectations, i changed 4 leg armors before i got my present one and i always used the epic armor kit).
your agi trinket is kinda creepy, try to trade it for another one - best will be the darkmoon tanking card (it sells for around 1.5-2kg on my server), for the second one pick the quest reward from Twilight Highlands (gives decent stam. amount and +mastery on use, so you'll love it).
In total - change trinket, ench legs and do some minor modifications to your talents/glyphs and you are totally ready for 12/12 normal raid progression
P.S. reforge the bow from crit to mastery raiting
P.S.S. your warrior looks really great in terms of stat balancing, good for you ^^