Off topic - Please read the stickies
They have answers to most questions you should have, and the Elemental Shaman Guide thread is where most people post these kinds of questions
On Topic :
The Rotation (as said in the sticky) includes Searing Totem, and you should only use Unleash Flame (EDIT: The reply above said to use UE on Elemental Blast, if you don't have the Unleash Fury talent, you shouldn't cast UE at all, except maybe on Thok if you can't get another cast off and have nothing else instant to cast) if you have the Unleash Fury talent, and even then only use it for Lava Burst, never for Flame Shock.
Regarding WoL, Immerseus is pretty terrible for judging DPS, so I took a look at a couple of your Malkarok kills (much more representative of single target DPS, so can actually get useful information from it). Looking at that, you seem pretty good on your Flame Shock usage, but you really need to be using Searing Totem more, for the single global it costs it will definitely do more damage than any other spell. You also should be using Earth Shock more, you munched a LOT of charges on the kill I'm looking at. I'm pretty confident you could have gotten at least 3 more max stack Earth Shocks off.
Generally though, you seem to be doing alright.