I healed a Heroic. Ok it wasn't very heroic, and the tank died a few times (they didn't stun the Stewards that whirlwind melee + arcane bolts), I sucked at dealing with 4 different people taking damage, but overall I actually healed a Heroic.
The last time I healed anything serious it was normal Shattered Halls with a full badge Tankadin (read as: I went afk and occasionally pressed flash of light), lets say I haven't improved much, my raid healing (since I am prot) is basically always Flash of Light spam, and I can do it for hours. The question is how do you actually learn to heal at this stage, what are the tricks to Paladin healing, and can I be bothered to find them out, with the Heroic nerf its a good way to run along and grab badges since most of the instances don't really need a healer (I tanked UB in < 25 minutes, SP in < 15). Its getting silly, but with the dual spec nature of the game soon, my alt spec will likely be as a Healer (unless I can get DPS loot, but then people expect hybrids to heal).
So I shall continue to play the game, lets see how this works, a Protection Healer :P.