Archery is all about repeating the same shot over and over. The less variation between shots, the better your accuracy. Most of our accuracy is determined by our archery technique, but an easy way to increase your consistency is to hold your bow level.
How does it work? When you reach full draw, quickly glance at your level to make sure the bubble is centered. Make any necessary corrections and take your shot. This simple addition to your shot process will save a few points, especially if you shoot 3D or field archery.