I borrowed Ann Fahl's book from the local Quilt Guild. She includes very detailed information about thread sketching as well as thread quilting. I'm looking forward to playing with some of her techniques.
Throughout March, I've been practicing a variety of doodles that would work for background fills. Soon, I will combine some of the information from the book and information from Ann Fahl's tutorial on SewCalGal's blog to create a sampler.
Now, on to a few more doodles.