Having partaken of the odd PvP game since I was in my mid-forties (not to mention playing games other than WoW which involve flags, teams and death) I'm no stranger to the concept of flag running, but I've found my ability as a flag carrier has vastly increased since getting into a good group. Not only have I become much faster at shifting between shapeshift forms in PvP, setting up easily-accessible keybinds for the various forms has helped me in PvE as well -- I'm developing a reflex for shifting into bearform when I start taking damage, which is useful in tricky aggro situations.
However, there's one common theme to my flag carrying; one thing I spend most of my time doing, and I'm not ashamed of the fact. My chief activity is running away, and staying alive. I make a lot of mistakes -- I run away from healers, I hit Dash and sprint off into the middle of several cows with big pointy swords -- but I'm learning, and enjoying it. The druid class makes a perfect flag runner in my (extremely biased) opinion, and with the right support a match can be over in a few minutes. Here's to more victories, and losses that help me learn.