Framing a football shirt can be a great way to display it as a decorative item. To frame a football shirt for kids, first, wash and iron the shirt to remove any wrinkles or creases. Then, lay the shirt flat on a large piece of acid-free backing paper and carefully fold and tuck the sleeves and sides so that the shirt fits the paper. Secure the shirt in place with acid-free mounting tape, making sure not to stretch or distort the shirt.