Some thoughts for you:
Your build appears to be a thorns build, but you have low thorn damage (3000 or so), so your pets are doing very little additional damage for you.
So if you want to do a thorns build you would need over 10,000 thorns to make it worth while. How high an MP could you do then? I have no idea. Probably MP3 or 4 max.
So right now I would suggest you drop the two passives, Zombie Handler, and Fierce loyalty, because keeping your pets alive longer is doing you no good - you can always recast them if they die. I would instead recommend to you the passives Grave Injustice + Gruesome Feast. These passives will help keep you alive, replenish mana, and give you more damage.
As for your main attack skills firebomb and AC, neither is doing a whole lot of damage in a hurry for you. You need to either use a third attack skill like bears or cloud of bats, or you should dump AC in favor of one of them.
I think for longer term build goals you should spend some time going over builds and other articles in our Index to Witch Doctor Builds and Guides http://us.battle.net/d3/en/forum/topic/7350275486