The main thing always:
Be Cool. Be Calm. Be Confident!!!
This is the Holy Trinity of Attraction. Women are absolutely attracted to a confident man.
I can't decide if your persona is real, but that is of small concern. Your insight into music is real and so is your advice on women.
If you are having difficulty being confident approaching women - then don't! as it will just make you feel bad when you screw it up - as Draper is correct about females wanting a confident man.
To overcome confidence issues start small. Do you have no confidence approaching a 10? You are in a big club.
Approach less attractive women to gain confidence. They are the same under the skin. I used to have this issue now I look back at how stupid my anxiety was. Treat them exactly like everyone else. Beautiful people are often lonely because they seem unapproachable. I have seen socially confident people fold when talking to a 10. Such anxieties, while real, are foolish. If you cannot cold approach women (approach for no reason other than to meet),
then look for reasons IE advice in supemarket, directions, saleswomen are often very attractive and are required to respond warmly so approach them with a question
The bad news is you will meet rejection . No way around it. So you have to learn to handle it. Not all of the babes you lust for will reciprocate. I look for signals of interest before a serious approach, but even then I get rebuffed.
The good news is you can, indeed must, learn to let rejection slide by. Think about it. She does not know you, so why take rejection personally? The sword cuts both ways as I have rejected some females as most guys have. Not everyone is interested in everyone who is interested in them. No surprise there.
In order to succeed, we must first believe that we can. Life is 10% what happens to you and 90% how you react to it.
You will strike out sometimes, but if you never swing you will never hit the ball.
C'est la vie.