Diagonal Buttonhole Stitch (Diagram 1):
Bring the needle up at A, create a curve (as shown above). Keeping your thumb on the curved portion of the yarn, move down and to the right over three canvas intersections, bring the needle down at B. Bring the needle up at C, move OVER the previous stitch to create another curve. Again, keep your thumb on the curved portion of the new stitche, move down and to the right over three canvas intersections and bring the needle down at D. Continue in this manner until you reach the end of the row.
simple and decorative stitch to work. Please keep in mind that this stitch is easily snagged. Also, this stitch should be worked in a diagonal line, as shown in the diagram below. Although the diagonal buttonhole stitch will not cause the canvas to distort, it should ALWAYS be worked on a frame. It is important to maintain an even tension with this stitch, which is where the frame is necessary.