Several here have mentioned, "drawing by the numbers" but none have said what those numbers are. So, here's a tutorial:
1. Shooting hand gets a good firing grip on the gun. Support hand goes to mid section.
2. Gun is drawn straight up until the muzzle just clears the holster.
3. Shooting hand elbow is pivoted down which rotates the gun muzzle toward bad guy. Shot may be taken from here if necessary.
4. Gun moves straight forward toward target, safety off. Support hand meets shooting hand getting the proper support grip.
Just out of curiosity....if wearing a light cover garment (button up shirt, etc...) where does that fit on the number line?
Lad
Sweeping away the cover garment is a part of 1. Normally taught as the hand in a "knife" fingers together and thumb touching the base of the index with no gaps.
The "fun" is different garments may require a different approach to consistent clearing. Best done by starting with a "red gun" or heavy plastic, non-firing, training tool in the shape of your carry.
Practice is precise and at one quarter normal speed to begin. Trying not to look as much as paying attention to the feel of as perfect a draw possible.
Remember to breath, acquire sight picture and squeeze the shot, perhaps again or three. This should vary to avoid ingraining the one shot and pause and moving to shooting till your world is safe.
Access your world post shots in lower ready during practice. Check 360 and again. Then practice the moves to reload and precisely reverse the steps and return the "topped off" firearm to the holster.
Adding lights in hand. 90 degree turns, use of cover, low light, etc. is all the benefit of solid training from well researched instructors.
In the basic training only the arms should be in movement. People who drop their head to the firearm, cant their head, lower themselves by bending forward, or worse back or bend one or both knees are just adding more factors that add to a miss.
Once this is solid then add dynamics to shooting. A great set of instructors in a great facility is much more important than buying 6 or 20 more handguns or burning ammo without improvement in mind.
Keep a log, at least for the first year of training and practice on weaknesses. Most tend to play to their strengths while shooting. Relaxed, fun, recreational shooting is also important but it should be in addition to training if you plan on the potential defensive use of a handgun. Train thoughtfully and precisely. Safe and smooth.
I am no Wyatt Earp…but I lived in the same town he did (Nome, Alaska - my high school). Still a privilege to live in our great state.
This is only a bit more personal view to a lot of core and important thoughts already shared.