Leah Day has some awesome free videos on how to fmq just about any pattern you want. I'm like you...though for me, I'm having a rough time getting fmq down at all. I'm way too critical of my stitches, spend more time with the seam ripper than the machine.
I admit I haven't practiced much either tho.
Here's a link to 1 of Leah's spiral vids:
https://m.youtube.com/watch?v=hSTd92LWE3E
And a link to Angela Water's "Shape by Shape FMQ" book. I bought it, and it really does make sense for me. She and Leah both also have classes on Craftsy you can sign up for (they cost, it varies).
Now to just get going and put my seam ripper up!:
http://www.amazon.com/Shape-Free-Mot...=UTF8&qid=&sr=
I'd also Google how to spiral fmq.
Regards,
Kif