Plus shapes big and small interlace in Backbone to create a mosaic of interlocking pieces. Use your fabric choices to highlight different parts of the design. project size : 35″ x 41″ (plus four other size options : placemat, runner, wall, throw) techniques : beginner paper / foundation piecing, basic piecing pre-cut friendly : can use 5″ squares pattern extras : five size options how-to instructions with illustrations, suggested quilting diagrams, directions for making a hanging sleeve