I found this free-motion stippling pattern at http://littlebirdiesecrets.blogspot.com/2010/10/how-to-free-motion-quilt-stipple.html:

Here’s a free-motion quilting tutorial fromElizabeth Hartman at Oh, Fransson!, free-motion designs from Melody Johnson at Fibermania and free-motion patterns you sew right through at Quilting Made Easy: