>>64506985
There isn't really anything other than dry firing and understanding all safety rules, do not pretend to be more experienced then you are.
You cannot get over the psychological wall that is a explosion happening in front of your face without shooting.
Hold the gun out in front of you, isosceles stance is the best and most intuitive = make a triangle with your arms, sort of slightly push your elbows upwards but not too high or uncomfortable as this puts more tension into the triangle making your entire upper body tense and behind the gun.