When drawing from a holster there are several things that you can do to speed up your draw. First make sure that you establish a good strong hand grip, in the holster. If you are trying to fix the grip during the presentation of the gun it will cost you time and accuracy.
Another important aspect is to have both hands moving at the same time. This will ensure that your hands meet up together guaranteeing a good support hand grip on the gun. When you present the gun make sure that you drive the gun straight out from where your hands meet. Remember the shortest distance between two points is a straight line.
Lastly, make sure to pick a place on the target where you want to hit. As soon as the sights interrupt your vision make any final corrections to your sight picture and break the shot. By making your draw more efficient you will see better results on the range.
Break out your shot timer and get a baseline time by drawing and shooting one shot. Repeat five times so that you can get a good average. Once you have your baseline start incorporating the changes above. You should start noticing a quarter to half second difference in your draw.