Fabric Galore, Really neat idea for FMQ practise. It's a great way to learn muscle memory.
But it lacks the problem of the needle continuously poking the fabric. That causes a tiny catch you have to learn to get used to, or at least that is what I am trying to learn.
My fabric sandwich has never moved that smoothly. I wish it would, as I probably could then follow the graphics lines I have put on the quilt top with a heat erasable pen without any problems.
The only way I have found that I can follow a sharp curve is to just stitch a few stitches, then stop, adjust the fabric, then do a few more, and so on, and ....
I probably won't throw this sandwich away. Some of what I have done is probably good enough to make something.