Hello
@FIDI_G I am not a sharp shooter but I do shoot a lot of Benchrest Paper Targets and over the years have tried to establish my best shooting techniques. To start with, you need a good solid Bench and good shooting conditions. If you are shooting a rifle you must have two secure mounts ( sand bags, bipod, etc.) in the front and bags or equivalent for the rear.
1) Learn to relax as much as possible.
2) Your shooting position must be as comfortable as possible.
3) Do not rush your shots. When I find myself rushing shots, I will get up and walk around some.
4) Each pistol and rifle try to duplicate the same exact hold and position that best fits the gun.
5) I like to shoot several “practice” targets before I start shooting targets that I plan to score.
6) I am right eye dominate and most of the time shoot with both eyes open, but I will use a left eye patch when needed.
7) When shooting a target that has a “10-Ring” for the bullseye, I will use the number 10 as my target. Example; if my gun is shooting slightly to the left then I will aim at the left side of the “0", and if needed aim for the center of the “0". If the gun is shooting slightly to the right, I will aim at the “1". You can adjust for elevation in this same manner.
8) Finally, practice, practice, practice ...............
Hope this will be helpful and good shooting,
ThomasT