From what I can see, your armor is a bit low. I'd also recommend farming normal ToC for the Black Heart trinket. Definitely one of the best unless you can get Satrina's or get into ICC. In reg HoR there's a nice 2h called Mourning Malice, alongside the Tyrannical Beheader from HPoS if you want to go 2h Frost/Blood/Unholy.
Saronite Swordbreakers are relatively easy to get mats for, so I'd recommend picking them up. Otherwise, your best bet for gear is to farm randoms for Triumphs.
As to your spec, you NEED to get 5/5 anticipation. I'd drop both RP talents (SoB and CotG). They're nice, but together they're very much overkill. Here is a spec I just threw together for heroics. I put 3/3 morbidity because the reduced CD on DnD is extremely helpful in heroics.
As to your weapons... well, standard DW tank thing. Get slow ones if you're having threat problems or want some good tank DPS, otherwise put tanking weapons in and gimp threat and DPS.
Gem and enchant for as much Stam/Armor as possible. Avoidance is nice for heroics and a few older raids, but don't sacrifice more than a few Stam for some if you decide to enchant/gem for any at all.
Rune Strike. This is your bread and butter as a tank. Macro it to your main abilities, such as IT,PS,BS,FS.
/cast Icy Touch
/cast !Rune Strike
Only use Frost Strike if you have 60 or more RP so that you always have enough for RS. The reason tanks use RS instead of DC or FS is that RS is a high threat move. I'm not sure if FS does more damage, but RS is what you should be using your RP on.
Otherwise, the reason you're getting hit so ahrd is because your gear is entry level tank. Get 4pc T9 and a few other badge pieces and you'll be chain pulling heroics in no time.
It is dark. You are likely to be eaten by a grue.