Am I doing it right means am I executing it sufficiently or perfectly? Well perfectly means no one can do it better. Sufficiently, means can I make it work....
Many times you watch something and try to mimic it. You get explanations of how it works and how to make it work, and training drills from your instructor so you can make it work and he can see that you can make it work. Then suddenly you are on your own and you try to apply it and it seems not to work. You are just having a bad day lets say....
Remember first that Krav Maga techniques are drilling virtual perfection of sequences to meet pressure points or stops an opponent from meeting your pressure points in the most efficient sequence.
Then you need to keep the Krav Maga principle in mind that will lead your way through your training process. You need to constantly switch your brain waves from the immediate picture of an action possible in a split second, and scan to what would be the next action possible within the same split second.
If you combine the general observations that Imrich Lichtenfeld and Eli Avikzar have made you get a set of principles that happen to even dictate a change to some of the ways they were teaching these techniques themselves.
At the end of the day, its a binary math of constant prioritization so its not so hard to master: Is this a potential opponent? Yes? No? Is he about to enter the hotzone? Yes? No? Which part of the body will he use first to distract or control my pressure points? Left? Right?
Which of his limbs have greater and faster reach as he enters the hotzone? Leg? Arm? Both arms? Whole body(is he about to create or take impact with his hip or shoulder)
Is he holding a sharp object? Yes/ No
Whats in the front side of his body entering the hotzone - Knife or bare hands?
Bare Hands or stick?
Is he entering the hotzone with a pistol threat? Yes? No?
Can I reach his wrist before he pokes me with the blade and deflect it with my front hand? Yes? No? Can he poke me twice before I counter attacked? Yes No?
Do I need to take it into account and move closer to follow up his first retraction prior to re-stabbing to limit his efforts? Yes? No?
Things of that sort of... A process of less than three seconds of which two are about doing intelligence work of speculations of should attack and necessity to counter attack would occur and less than a second for the process of self defense!