PvP Mage buildFollow

First of all id like to thank Anobix and Poldaran, these guys are the best mages ive ever seen and have learned a very great deal. That being said however it seems they both specialize in raid spec however are great with the calculator numbers, so my question is what could i possibly spec better for the most dominant mage Pvp build? Ive completely humilated frost mages but am still having some trouble with some classes. Warriors used to be target practice, now their immunities seem to be evening the score, rogues used to own me now i love seeing them one on one even if they get he drop on me. this is my build what can i do better? http://www.wowarmory.com/character-sheet.xml?r=Andorhal&n=Astharath

I consider this to be the best PvP-build: http://www.wowhead.com/?talent=of0ibzrcdjGuMtxdfV0co

Edited, Jan 13th 2009 3:39am by kolly