Need help regarding Caster build

Hello exiles,

I'm building a Templar with a Freezing Pulse build, and I'm currently in Act 3 normal, Lv. 29, and my damage output is TERRIBLE.

I would like to know what I'm supposed to do to get more damage.
I tried to equip this ring:



But apparently elemental damage on gear doesn't increase my damage with Freezing Pulse?!

Then, what does?

Right now I know I should focus on: Spell Dmg %, Elemental Dmg %, Cast speed, Crit chance and Crit dmg. But what else?


Can anyone give me any tips?

Adds X ~ XX Fire/Cold/Lightning Damage -> DONT WORK ON SPELLS
% Increased Fire/Cold/Lightning Damage -> WORK ON SPELLS

Freezing Pulse = Cold Damage
Your ring increase %Fire Damage

If you wanna increase Damage of your spell:
xx Spell power (weapon, implicit mod for wands/es shields)
% Elemental damage (some uniques have it, or implicit mod for scepters)
% Fire/Cold/Lightning Damage (rings/amulet/weapon)

Thank you for your explanation!