Love your Avitar!! Looks like a zombie that needs to be controlled!!
As for dry firing drills...try this one:
-If you shoot a 1911, first clear and check to make sure your gun is unloaded, check it again, tape a piece of paper with a centered 1/4" dot to a door, cock the hammer, place a sharpened pencil down the barrel (eraser first), from 6" away aim at the dot and pull the trigger. You will leave a nice graphite dot on the paper. Repeat aiming at the dot and "firing" the pencil and just like with real ammo, try to make the smallest possible group!!