Fold the fabric in half lengthwise and finger press. Start at the right edge, stitching over 4 fabric threads - under 4 fabric threads, place the basting stitches in the weave of the fabric crease. Baste the entire length of the fabric. The basting threads will be a constant check point for you when placing the buttonhole edge.
Arrows represent the center of the design.
Using Caron's Wildflowers form the buttonhole edge over the 4th basting thread from the selvage edge. Count the basting spaces as well as the visible basting thread. The open circles on the chart represents eyelet placement. Clip and remove the 12 fabric threads at the inner edge of the long klosterblock. Bring the needle up in the first eyelet then stab the needle down in the second eyelet.