When it comes to asking a girl out, it's incredibly uncomfortable and terrifying. I personally prefer if someone asks me in person than over text. Which is why I'm going to list some of the things I personally do and don't like:
Do try to ask me for my number. If I give it, and you want to ask me out on a date, ask me right then instead of waiting 5 days to do it.
Do make committed plans. If I have a busy schedule and you don't tell me a specific time, and I don't give you a time, then ask anyways because I'm honestly too busy to care about anything except making a difference.
Do continue to talk to me if I don't seem interested in the situation. Chances are that I will continue to talk to you if I have talked to you already.
Do tell me what you don't like about situations. If you're worried about flakiness, then make a committed plan. If I cancel, say something and ask me the reasons as to why. If they're not legitimate, say so, and then I will apologize. If I have forgotten and I haven't gotten any messages saying I missed something, I will probably forget.
Do ask me questions about myself over text or in person. If I seem uninterested in talking about myself, don't take it personally. If I like you, I will share experiences. If I don't, I will share very little.
Don't assume anything about me. If you have questions to clarify, ask again. If I do not share something about myself, ask a question. If you are assuming that I am anything, maybe ask anyways. Because it makes me annoyed when I assume I know a situation that I don't.
Don't push me into alignment. The worst things you can do to me is try to make me do anything that I don't want to do.
Don't think that I don't care. What I like to do when it comes to helping myself out is by choosing to have the same routine every day. At 11 A.M. every day I like to go and get coffee and listen to music. At 4 P.M. every day I like to go to the park and sit down.