So, I'm relatively new to the game. My first char was WHM and I took it to 70 before I completed HW, so I've been mostly levelling some other stuff since I don't get any XP on the healer.

Lately I've been playing DRK more often, and while I'm not going to pretend to be the best out there I think I'm generally competent. One of the ways I determine if I'm doing a good job is how much the healer is DPSing - if they are popping off a lot of damage (and nobody is dying) I figure I must be doing something right.