I have recently started to play alot of live games and is wondering if something can be done to make myself harder to read and give away tells live. I am asking the high stakes live players how you improved or what you do to make yourself impossibel to understand. I try to study players which I am in hands with a closely as possible(ofc do it when I am not in a hand but not as thurelly or my brain will get overloaded) 

Do you ask a close friend to stand and watch for a while you are playing and see if you gave away something particular during a session? Or do you just film yourself in front of a mirror and try to act exactly the same every time you bet. For exampel you ALWAYS announce what amount you gonna bet with a certain tone off voice and then put it in a very similiar fashion as humanly possible? What things do you particullary notice that players usually give away in a bigger picture.(For example I have noticed when a player wants to play a hand or is interested in a situation he will usually lean forward a little bit.)

I peronally think that acting exactly the same is quite hard or atleast if I have to think about it. I have tried to watch some youtube clips off the best players and how they act during a hand should I try to mimic that?

Any tips are welcome since I belive live you can get ALOT or loose even MOORE by seeing or giving away tells and information.