Can
Can
As you come off the face of the jump, take the pressure off of your leg that you are to be doing the can can with. Practice pulling your knee strait up in front of you. When you have got this down, try putting your foot on top of your gas tank. You will probably soon feel comfortable putting your foot on top of the gas cap, so now its time to stick it over on the other side of the bike. As your foot comes up to the gas can, rotate your hips to the side you will be putting the foot over. Extend your leg over that side of the bike by straitening out your knee. (Some people like to kick down towards the opposite footpeg, but the transition to no footed can cans will most likely be easier if you practice kicking your leg strait out.) Kick it out as strait as you can, and if you wanna really get it out there, tilt the bike (by pushing on the bars) to the opposite side that you are kicking. This will almost undoubtedly be weird the first time, but it will make for a good transition into the realm of the no-footed can-can.
Make sure you only sick out your leg to the point where you will be able to get it back over safely before landing.