Most sewing directions instruct you to mark the placement of buttonholes by putting pins in the fabric above and below where each button should go, or by using dressmaker’s chalk to draw lines on the fabric. If you’ve had trouble with these techniques, try marking the buttonhole placements on a paper towel pinned to the garment instead. When you sew the buttonholes, the marks on the paper towel provide an easy-to-see guide for perfect positioning. You can then reuse the same paper towel to place the buttons.
Repeat the steps above for each buttonhole.
The buttons and buttonholes should now line up perfectly.