I've seen where you can buy paper stensils to put right on the fabric and you just follow it, I've also been told that if you ever doodled as a child to start making those swirl's etc on paper and when your comfortable doing that start out on small practice blocks. I haven't tried it yet myself I am afraid of screwing something up. Our LQS once a year holds free motion classes so I may go that route when I'm ready.
Someone else mentioned the Craftsy website I recently got an email about that particular class I'd check that as well it looks like it's about a 10 lesson but I believe you need to purchase it.