It has helped me to move close enough to a small target or point target so that the muzzle nearly touches it a full extension. I can check sight placement and position easier that way. Also, a small level on the slide can help with making sure the gun is level so that everything comes up to where you shift to the front sight. What I do in general is focus on the target point, extend, then shift to the front sight at or near to limit of extension, not much before. I hope this helps.