First, know your tank. Watch a few pulls and see how they handle themselves.

Second, have a plan. I have lustrates up for when I dps for "oh crap" spikes. WHM a regen and a stoneskin should give enough to get a few Stone II in. Keep a swiftcast stoneskin for "oh crap" spikes.

Third, use debuffs before dpsing. Virus, eye for an eye, bind, and sleep; give extra time for you to dps.

Forth, play SCH and have your fairy cover it.