This Home and Garden video tutorial shows how to iron a men's button up shirt. This video will show you how to iron a cotton shirt. Switch on your iron and set it to the hottest setting or cotton setting. Place the shirt on an ironing board and start with the collar. Iron both sides of the collar. Now get on to the sleeves; first iron both sides of the calf and then the whole sleeve. Repeat the other sleeve. Then iron the front of the shirt; pull the fabric slightly to even out the creases, iron in between the buttons, don't iron over the buttons. Finally iron out the back of the shirt; starting with the tail of the shirt and moving up towards the shoulder.