How do you draw a pistol from your waistband? Very carefully!***
Note pistol is in a holster although with a hazzardous retention strap. When drawing from this or any other holster, the idea is to not put your finger on the trigger until your muzzle is on the target and you have decided absolutely to shoot.
I get the impression he put the holster on just for the photo. There's no way he can sit down where he placed the holster on his belt. Verticle holsters can be placed just behind the seam and butt forward canted holsters can be placed on the seam of the pants.