I've been wanting to take 
Mary Mashuta's Foolproof Machine Quilting class for awhile, and finally, the stars aligned, my Saturday was free, and the class had a couple of empty spaces.  I've been adoring Mary's quilts for a long time.  I had her 
Cotton Candy Quilts book continually checked out of the Berkeley Public Library for months at a time until I finally found my own copy, so I was really excited to take a class from her.
She uses a process of quilting that doesn't involve marking your quilt top.  Instead, you use contact paper cut-outs to create designs that you then stick onto your quilt and quilt around.  She also uses very thick threads, and I love that look!
Here are a couple of my class samples.  
I can't wait to use this technique on a bigger project!