If you apply fasteners after the garment is complete, hide the stitching on the outside with buttons or trim. Use them instead of buttons. Frogs can be bought or handmade. You usually see them on oriental-style jackets and on capes, velvet jackets, or quilted vests. Toggles can be used on all kinds of outerwear.
Ties make an easy closure for all types of clothing.
You can use ribbon or matching fabric. Lap or match the garment edges according to pattern directions. Pin the ball of the frog or toggle in place on the left side of the garment. Pin the loop on the right side. Be sure the garment closes properly when it is fastened.