While marksmanship is common across the board, some things don't translate from long guns to hand guns. Start running by first crawling. Stand normal. Stand how you always stand when you aren't shooting. That is your natural stance. Empty handgun in holster, establish your grip. Don't draw until you have that grip ingrained into your brain. Solid grip, high on the backstrap with your dominant hand. When you begin to draw, work on deliberate smoothness. Smooth is fast and when you draw, you begin to rotate the handgun from the holster as soon as the barrel clears the holster. The support hand joins the handgun as the handgun moves up and to the center of your body. When your hands have met and you have established your two handed grip, you can come to the high ready or punch out to obtain your sight picture. I still close my left eye initially when I acquire my sights but quickly open both eyes as I remain on target. After you have mastered all of that, then you can start dry firing.

Have you taken any classes or found a trusted trainer to help you in correcting your technique? Finding a trainer or trusted training partner are worth every penny. Cameras have become pretty common as well for assisting you, but they take some time and they do not give immediate feedback like another set of eyes.

Don't get hung up on time. Speed comes with practice. Fast misses are worth less than slow hits.

It's a journey. No one completely masters it and I am afraid that as I get better at one thing I seem to slack off in something else. I was once told that a good ratio of dry firing to live firing is 1000 to 1. That seems about right to me and sure has saved me some money over the years.

Just my $.02

Be safe.