FMQ gets better with.....drum roll......PRATICE. With practice your muscles loosen up and you get muscle memory. Make some practice quilt sandwiches about fat quarter size.
Now set the stage. Get out some music; for Babtist fan, maybe a waltz. Do the elephant walk. Quilt with big arm movements to loosen up. Bring them down to the size you want. You're getting better. Now do it all again, and again, as many times as it takes to feel like you got it. You can reuse the sandwich over and over; turn is 90 degrees and use a different color thread.
You'll get it. Just........PRACTICE. You didn't walk very well the first time....etc. Don't expect to do as good as an experienced person first time around.