I have said this before, indirectly and I am saying it now, directly. A chump strategy is to look for interesting topics to talk about hoping to excite her.
If the topic is more interesting than the man, than it is no different than buying her a drink. She will be more interested in the topic than the man.
Your job, is to make sure the focus is on you. You are the stimulus, not the topic. So if the topic is interesting, you need to be higher energy to be even more interesting than the topic.
Don't worry about what to talk about. She will forget.
Do focus on the interaction and how you present yourself as an Alpha male. She will remember.
Too many times, men approach with the mindset to get her number or to sleep with her. This mindset stiffens creativity and prevents the man from coming up with new ideas.
Imagine if a man approaches another man with the intent to get his number and become best friends. That would simply be creepy.
Instead, the mindset you should take on is to play. That's it. The purpose for you to approach is to play, flirt, enjoy the interaction and togetherness of another person.
Going with this mindset, you may not want her number if she does not qualify. She does not qualify if she does not play along or respond in a positive manner.
As well, because you are just playing, it is okay to smile, don't be so serious and it is okay to say silly things like "Should I get a tattoo?"
So next time, you see a stranger, don't keep your distance because strangers don't like to talk to strangers. Don't worry what the stranger thinks of you. Better to have her think of you than not know you even exist. If she thinks your friendly attitude is wrong, then maybe she is uptight. Everybody starts off as strangers. Uptight people will never get to know anybody.
Every expert tells you, you need to be confident. Oftentimes, this results in an egotistical attitude. A person that lacks confidence hides his fears with egotism. This egotism is not only unattractive to females, it is unattractive to everyone.
However, a confident man need not to act egotistically. He can also claim to be shy and this claim can even come across as an attractive turn on. Claiming to be shy can put her at ease and demonstrate vulnerability and humility which is also an attractive trait.
Just don't really act shy and nervous.