Ironing a button up shirt is an important way to make sure you are always looking in top shape. When ironing a man's shirt, you should always start with the collar first and then move to the shoulders and back. Make sure the shirt is stretched out properly over the ironing board. Then move from the shoulders and down the sleeves, making sure you iron both sides, moving slowly and carefully. After ironing your shirt, make sure you hang it up to prevent more wrinkles from forming. Using this careful method, you should be able to iron a man's button up shirt properly, ensuring that your man always looks in top shape.