My limited experience with pvp involves 3 things.

1. never leave a man behind - rez them or fight and die within range of the body, that way at least you all go to the same GY when you release. WSG being the exception.
2. totems totems - never get caught without them, especially tremor totems, with your castsequence, you'll have 4 drops, spread your tremors out so they don't drop at the same time, so they don't tick in unison, makes fear break that much faster.
3. charging in isn't your best tactic - let them come to you, gives you time to drop totems, and never be out of range of them, and it's much funnier to just pick people off.
4. Dealing with melee is a different story, basically I drop nova totems and magma totems, then I just heal and let them kill themselves.