To attach chenille letters on a leather jacket, start by laying the jacket on a flat surface and arranging the letters in the desired position. Then, carefully pin the letters in place to secure them. Using a needle and strong thread that matches the color of the chenille letters, sew around the edges of each letter, making sure to stitch through the leather without pulling too tightly. Once all the letters are securely attached, remove the pins and trim any excess thread. This method will ensure that the chenille letter patches Canada are properly and securely attached to the leather jacket.