Made J.V Cheer, Need help with Lib?

Yesterday was stunting tryouts. I did the bear hug, straight cradle, and the lib cradle. For some reason I couldnt do the lib without getting all shaky after 3 seconds, this was my first day ever flying. Anyways I made the J.V Cheer Team as a Flyer. Any help on how i can kind of overcome my fear of the lib and be better at it?