1. you have a bunch of random nodes sticking out of your tree and mana nodes doing nothing for you.
You are a jugg, get the endurance charge nodes.
http://poeurl.com/b7J4 is a quick-fix tree that is much better.
2. Sell all your lvl 20 gems with a gcp per gem, this will give you 20 quality gems. Swap both of your Culling Strike gems for Ruthless. LGOH does nothing for you on your warchief totem, swap for Conc Effect.
3. More life, swap the boots for Kaom's roots or a decent life/25+ms/res pair. Swap rings for a high life roll with res, bonus stats are +flat phys and you may need one with +int. Get life rolls on all your jewels, the fire res/mana regen jewel is useless.
4. Overflowing chalice and Wise oak are basically useless and you only need 1-2 life flasks. I would get a quicksilver flask of adrenaline, seething divine life flask of staunching, basalt flask of warding, a Lion's Roar and an aztiri flask or other utility flask (of heat if you don't get kaom's roots)
5. Dual wield sunder >>>>>>>> 2h sunder. Get a decent mh and a cheap sword statstick for offhand