Place the pieces of fabric for the pillow right side out and pin them together.
Sew the pieces of fabric together with a quarter-inch seam and a straight stitch. Leave a 6-inch gap of fabric unsewn so you can stuff the pillow later.
Iron the seams flat. Trim off about half the seam to make them even and iron the seams flat into the fabric.
Turn the pillow inside out and iron the seams flat again.
Sew over the seams with a 3/8-inch seam with a straight stitch. Iron the seams flat.
Turn the pillow right-side out.