Dress shirt - pillow case (pic. 3) I couldn't figure out how to get all 3 pictures together. Easy pillow cover: measure an additional 1/2" (for each seam allowance) more than your pillow form. Mark on shirt and cut out. Place right sides together, sew all sides. Trim seams, unbutton and turn right side out. Iron if needed. You can add any embellishments or leave it as is. "Tada!"