I know a lot of people are having problems with the Jousting to get your valiant coins, so I'm going to make a quick and dirty guide to how I've figured out how to do it.
Step 1) Get 3 shields up on yourself. Whenever you lose one, hit that shield button. The damage reduction is huge.
Step 2) begin the match. When the match starts the valiant will walk towards the center. Let them do this, and start mashing your 3-key (charge). As soon as they are far enough away, you will charge at them and hit them for a good chunk of damage.
3) As soon as you start to charge, start mashing the 2-key (Shield Breaker), because what happens is, you'll charge past them, run in a small half circle (you may have to use mouse-look to spin just a bit to get off the Shield Break) and bam, you've got your opponent down to 0 armor.
4) get back into melee range and mash that 1-key, putting your shields back up if you need to.
Rinse and repeat steps 2 through 4 each time your opponent moves away from you, remembering to keep your shields up as well.