First get comfortable with ollies and backside ollies. Approach the obstacle going fast, real fast, and almost parallel to the thingy your going to lipslide. Ollie ! ! Enough to get your back wheels over what you are lipsliding. Touch down on the thing you're sliding, keeping your shoulders parallel and your legs in a shifty position, sliding and lookin' sick. As you approach the end of the obstacle, put a little bounce in your knees and come flying off the end as you shift your legs back to parallel.