Martingale-That Patchwork Place: Machine Quilting With Style. Quilt along with Christa using walking-foot or free-motion techniques to create fabulous quilts. She shows you how with eight different walking-foot designs and ten free-motion quilting motifs, plus twelve inventive patterns to put all the quilting techniques to use. Author: Christa Watson. Softcover, 112 pages. Published Year: 2015. ISBN 978-1-06468-625-8. Imported.