http://freemotionquilting.blogspot.com/2009/09/quilting-tools-and-machine-setup.html
This is the site for 365 days of free motion quilting. Practice drawing every one. I keep a sketch pad and one of those cool new Sharpie pens that don't soak through paper, with me at all times...I practice in meetings and waiting rooms.
Look for zentangles on Google and look for the Youtube videos on this subject...very cool inspiration.
I totally agree with those who have said draw it first. Like me, you may now have another hobby...drawing.
It took me a year and a half, but I can now free draw such designs that I think I should be a tattoo artist.
Feathers are my free-motion design of choice.
Watch every video you can, including Patsy Thompson's ones here on TQS.
Have fun!