Originally Posted by AndiR

Don't worry too much about trying to stay exactly on the line. That makes you go too slowly and 'jiggly'. Instead strive for smooth movements, even if they're off the line a bit - after all, no one will ever know as that line is not marked on the quilt!

And the suggestion to try it a few times without turning the machine on is a good one. The more you do it, the more your muscles remember the movements and the more automatic it becomes.