I'll give you a way to practice!
Take out a piece of paper (lined or unlined, doesn't matter)
get a pen
Put the pen down on the paper and begin moving it around and drawing.
Don't pick the pen up, do a continuous line.
Now start making designs like flowers or jagged edges or flames or stars or swirls.
Free motion quilting is the same only you're moving the "paper" around under a stationary "pen" know what I mean? Just make a few quilt sandwiches that are 12x12" and practice things like that, just doodle :P You'll pick it up faster than you know!!