Years ago we knew a Preacher.  He made a couple of statements that hold true even in the Vent world.  One was "God majors on preparation and minors on performance".  What he was saying was that if you have done all the practice needed to be good at the craft, the performance will come off without a hitch.  The other statement   he always pounded into the young people "Remember the 4 P's - Poor Preparation = Poor Performance".  Even the great Vents like Terry Fater and Jeff Dunham still practice, practice, practice.