Dry firing is a great way to improve, and adding a coin to the top of the front end of the slide is a great way to gauge your overall performance. But, use a snap cap or a fired casing what has the used primer still in. Practice your stance, get comfy, and practice presentation of your pistol. You want to push forward with you firing hang and pull back toward you with you support hand. The push/pull force and amount of grip pressure you apply to the pistol should, at first make the pistol wiggle. When you have reached that point release the pressure until the pistol stops wiggling. Place the middle meaty portion of the tip of your trigger finger on the trigger, how far up or down you finger is on the trigger is up to you. Squeeze the trigger rearward in a slow and steady motion with increasing pressure. Dont anticipate the shot or jerk the trigger, because this will pull your shot off target, the point is for the click of the hammer or striker is to surprise you. Hope this helps, Happy Shootin, Boomer.