I don't know about EU, but if you're ever on NA, check out Beeper, Canary, Serf John (or whatever he goes by these days), and when I'm havin a good day, Your's truly
. I've MW-ed a War spear 2 or 3 times now, and I stick by my opinion that the War Spear is the best pole arm..... EVAR!
I suggest that above all else, you watch other people's, and practice your own Footwork. Footwork is CRUCIAL in Any melee class, but polearms, generally having the longest reach, means that you need to be able to position yourself so that you are constantly taking advantage of the range of your weapon.
That being said, I highly suggest you also have a decent amount of athletics (I'm a heavy advocate of Agility, and almost never have less than 7 athletics, but to each their own). It's extremely useful being able to back out of your opponents range, and then dash back in to stab them in the face. High athletics allows for control of the pace of battle in most 1 v 1's, as well as facilitates GREATLY your own footwork and positioning.
The last thing that I can think of is capitalizing on the pole arms Pole stun. Being able to turn your character to hit earlier in your swings as well as being able to chain your attacks can literally render your opponent's helpless because, under the effects of constant pole stun, they can't block, move, attack, or do anything but get slapped silly until they're dead.
Oh... Last thing.. YOUR TEAM... Use your team and your range to your advantage. The range of your weapon allows you to support your team as well as do damage without being in harms way yourself. Just wait for a team mate to engage the enemy, and the run up into poke range and stab the hell out of them. (Be wary of your team mate's side swings though). That's it, I think.
-ZyloRage