Just get it int your head - all girls like you, and want to fark you! Absolutely all of them! The reason why they don't jump on you is that they feel it is not socially appropriate to do at this very moment. This is the attitude you should have when interacting with girls.
When she says "Maybe" or "I'll think about it", assume it is a yes, and proceed based on that. Even if she says No, assume it is a yes and proceed.
Even if she says, fark off! Eat shit!, assume it's a Yes. If she is still talking to you thats a strong indicator that she likes you and want to fark you.
The only situation when you cannot proceed is when she is not responding at all. Then assume she would say Yes, but something stopped her, like forces of nature or an act of God. Act based on that.
Make only positive assumptions.
I once was rejected 30 times within 2 hours when trying to kiss a girl. After like tenth attempt we were both laughing at it, and she was saying, NO you will never get it. Two hours later we were rocking my bed, because three hours later she had to go to work.
At that very moment when you realize all girls want you, you will not need any of those pickup tricks. Until then, fake it