Step 1: Lay an interfacing square, fusible side down, on the wrong side of the front and back squares. Press with a hot iron to fuse the interfacing to the fabric.

Step 2: Cut the remaining interfacing square in half diagonally (can save leftover piece to use in another bookmark). Place interfacing triangle on the wrong side of the corner square and press. Fold corner square diagonally, interfacing to wrong side of fabric. Give the folded edge a quick press.

Step 3: Position the folded corner in the corner of the top fabric square, right sides together. Layer the bottom fabric square on that top of them, rights sides together.

Step 4: Pin through all layers on all four sides of the fabric square. Make a mark or place a pin on the bottom edge of the square about an inch in from both corners. This will remind you to leave the space between the marks unsewn.

Step 5. Using a quarter inch seam, stitch around all four sides, beginning at the first mark and ending at the second mark, leaving an opening between the marks. Be sure to backstitch at the beginning and end. Clip the threads.

Step 6: Clip the corners of the fabric, taking care not to cut any stitches. Turn the square inside out, so the right side of the fabrics are showing. Use That Purple Thang or a stylus to push out the corners.

Step 7: Give the bookmark a quick press to set the seams. Topstitch around all four sides of the bookmark, about an eighth of an inch from the edge. Clip threads.