Placement on a Jacket. People wearing suits and/or jackets should place the pin on their lapel. Traditionally, lapel pins are worn on the left, near the heart. This is especially important if the lapel pin symbolizes something important to the wearer, such as a flag.ou need to take off the backing, push the pin into your lapel (or tie or shirt) until the point comes through the other side, and reattach the backing. The pin should sit upright on your lapel, tie or blouse.