Dry practice is infinitely cheaper than blowing live ammo down range and it can be done in the comfort of your own home. I used to do it while seated in my favorite arm chair watching TV. Pick a "target" and practice trigger control. Get target acquisition and get the trigger break. The goal was to have the sights on the same place on the target when the trigger did break as before the trigger was squeezed. Added benefit of this type of practice is that one builds and strengthens the muscles in the arm and neck from the weight of the gun if you practice long enough each day. In a life without a gun, you would not be holding a weight out in that firing position for an extended period of time. After a couple of months of this type of dry practice, you will see a considerable improvement in your marksmanship and notice a steadier hand.
May the Schwartz Be With You.