To master proper form and prevent fishtailing in archery, it typically takes several months of consistent practice. You’ll need to focus on building strength in your upper body, particularly your shoulders and back, and developing good posture and alignment. It involves using the proper stance, keeping your bow arm straight and relaxed while drawing back the string with your other hand and releasing the arrow smoothly without jerking or twisting. It’s also important to focus on your breathing and mental focus during each shot. As you continue to practice, you’ll gradually develop muscle memory and improve your accuracy, which will help reduce the risk of fishtailing over time.