I have a few suggestons.
For easy practice, look in the remnant bins for prequilted fabric and use that to practice on.
Be sure you are pulling your bobbin thread up to the top of the fabric before starting, and dropping your feed dogs.
You need to be moving your quilt as fast as you are stitching it. If you don't have a matching rhythm between your moving the quilt and the needle going up and down in the quilt, you will have loops on the bottom of your quilt. So find the speed that you work at the best.
Put your needle in the down position so when you stop, the needle will be in the fabric.
Turn your machine around to face you. When you look at FMQ set ups like the Flynn or the HQ Sweet Sixteen or the Easy Quilter Track System, the machines are all facing you.
If you have a bed attachment on your machine, invest in one of those silicon slider sheets that help the fabric move smoothly back and forth. I think it's called a Silicon Slider but you can also get a silicon oven liner at Bed Bath and Beyond that works great and is cheaper.
Then practice. You can do it, just start with easy meandering lines first and work your way up.
And add wine, lots and lots of wine.