This week's video tutorial comes to us from legendary designer Judy Martin of JudyMartin.com. Throughout her long career, Judy has always been prolific (she has created more patterns than any other designer!) and is devoted to empowering quilters by providing them the tools and resources they need. More from Judy on this video: "The key to good patchwork is having the perfect seam allowance. In this short video, renowned quilt designer Judy Martin shows how to test your seam allowance and how to perfect it."