Make sure the presser foot is "down" when you begin It may appear to be down without pushing the lever down.
Lol--b/c I doubt you need this advice! I practiced FMQ for the very first time last night and thought I was being so careful. Kept ending up with loads of thread on the back of my practice piece and getting "stuck". By now I know that when I have a problem there is probably a very simple solution... and that was the case! My presser foot wasn't down. Problem solved.
I'm happy when there's a quick fix like that!
:oops: Figuring this out did not stop me from making the same mistake two more times. I am a slow learner, apparently.