Make sure your light is screwed tight so doesn't move--the vibration can loosen it and your pattern will be all wonky If and when you get off the pattern line easy back to your line, don't jerk And when I was starting out bring the takeup roller down a little closer to the machine so not as 'Free' motion a little tension makes it not get away from you so easily Not sure I explained that very well,, practice, practice...oh yea PRACTICE :):)