Topstitching is more than just decorative—it’s the key to strong seams and a professional jacket finish. Whether working with leather, denim, or fabric jackets, the right topstitching technique can transform your design. In this guide, we’ll explore how to select the best thread, stitch length, and tools to create durable, stylish seams. Perfect for beginners and advanced sewers, these tips will help your jacket look sharp and last longer.