Mark each button location with a pin. Cut pieces of fabric slightly larger than the button cover if coordinating the buttons with the upholstery.
Remove one pin and place the back of a two-piece button against the headboard.
Hammer the back of the button into the wood headboard backing with a rubber mallet.
Wrap the fabric circle around the front of the button. Press the ends behind the grippers on the inside edge of the button.
Place the front of the button onto the back of the button and snap the front of the button onto the back. Repeat until all buttons have been installed.