Cowboy?? I hope that isn't as in the Dallas...
BTW - Welcome! Buy a shirt and post pics!
If you wanna drag a knee for the first time, go to a NICE, EMPTY parking lot and ride in a 40-50 foot circle... SLOWLY increase your speed while hanging off. Before you know it, you will have your knee down. Before you get into intense lean angles, make sure the tires are nice and warm. Once you drag one knee, swing to the other side and go the other direction. This exercise works better with markings, so if there aren't handy ones already there, bring a couple of cones.
Good luck!
-Rip