How would I fit a person's face from a picture onto a button?

Question

The size of the image is 3072 x 2304 (pixels) and I need to take out one person's face from the picture and put it on a button that is 2 3/4 inches in diameter. I already have the button maker but all I need to know is how to get that one face from the picture to print and onto the button

Answer 1

If you mean a physical button (like a campaign button that you would wear on your shirt) then most manufacturers will do that if you ask them.