Couple things that jump out.. I would 5/5 bladed armor, drop hungering cold and 2/3 Scent of blood. Hungering cold is mostly a pvp talent with limited use in pve raiding.
Make sure to drop unbreakable glyph and pick up Obliterate glpyh asap. Oblit is the core glyph all Frost Dks must have.
With that out of the way I would like to help more but you didnt give much info specifically about what the problems your running into are. Survivability?.... threat?... experience tanking? Need to know whats actually going on to help further.
One last thing, any reason why you've chosen to go 2h Frost instead of DW. Most frost dk's these days go DW as a lot of the talents in the frost tree that are tailored to DW. It's arguably a simplier frost tanking spec due to single disease rotation that still maintains high threat and good survivability. I'm not knocking 2h frost which, I know for a fact, can work just as well. I simply tend to see 2h tanking go the blood or to a lesser degree unholy route.