Don’t focus on the end game
If you’re really nervous and self-conscious, start by just trying to have a conversation, without having the question of asking for her phone in your mind. Most guys have their brains wired in a sense that leads them believing that they need to go from A to B in order to get to C. But don’t worry about what’s going to happen at the end of the interaction, just speak words like you’re a normal human being. It’s not all about you getting the number and getting lucky, it’s about creating an interesting moment in the day for the both of you.
Blitzkrieg
This is the complete opposite of the previous tip, but if the last one doesn’t seem like a possibility to you, use this one. Just go in and say something like “Hey, I’m in a hurry, give me your number and we’ll go get ice cream soon”. Or “I don’t want to bother you in the subway, some homeless guy might interrupt us, so just give me your number and we will talk soon”. If you’re super shy, you can type this on your phone if you’re sitting next to each other on the subway. You’ll be surprised with how often this works.
Look for the Surroundings
Ok, she’s pretty, and you’ve seen thousands of pretty girls in your life, and she’s been told that she is pretty a thousand times that year probably, so don’t go in with that and expect much. Take notice of your surroundings, what she’s wearing, or what she is doing and make a comment or a ask a question about that. Think what would you ask a friend if he was in that situation with you. Even though some pick up lines are actually funny, you’re better off being more low-key during the day.
Some of these tips are opposing, but knowing all of these techniques will give you a bigger arsenal and you get to choose what works for you and what doesn’t. Every one of them is certainly better for picking up girls than not doing anything and stressing for two weeks after it.