Altered Time - your #1 World of Warcraft Mage resource!

I'm raiding now with my arcane mage, I have pretty good gear but my dps is well, shocking. I've looked at everything and it doesn't appear that I'm doing much (if anything( different. And yet, clearly I am otherwise my DPS would be more than 3k (5k burst) Anyone able to offer advice? What's best to ...