You can tell if you're being a good dragoon if you're doing damage, you're not dying to aoe, you're not causing wipes and people compliment you ^^

The Dragoons: A Rotation Reborn thread is very useful for rotations and such. It looks to me like you would benefit from using Heavy Thrust prior to Chaos Thrust combo since it affects your dots. Plus you should use Phlebotomize since I didn't see it in your rotation.

Learn your fights, know when to use elusive jump to prevent stealing aggro/getting hit by stuff, and time your jumps well.