Spriest PvE help!

[Vyhris]

I have been playing shadow for a couple years now, i know what i'm doing for the most but i still find my dps is lower then other shadow priest's. Was wondering if someone could add my btag and offer some advice and just help me out a bit.

Sinister#1651

The toons name is Vyhris and here is a link to the armory page to look at my gear http://us.battle.net/wow/en/characte...yhris/advanced

[Djriff]

I highly recommend reading http://www.mmo-champion.com/threads/...oP-only-6-2-3) and go from there. You're not really giving us a bunch of information to help you out.