Any of those examples work fine.
I mean I use them all the time.
Like I think I used that same exact first one the other day.
Just ask a question, or make a comment about something, or something else.
Of course, I am not really into cold approaches at school, as I am into talking to people in my class.
Like basically, you have to make your own fortune.
No one can talk to a girl for you. Well they can, but not likely to work.
To be more out going, answer questions in class, talk to people that seem to be doing nothing.
I see a girl in my class, checking over her homework, and then, I know she isn't doing anything important, because homework never is, they are only checking it because everyone else is.
Well I go over to her, and ask he if I can copy, or start up a conversation about soemthing.
There is this one chick in my class, failing. I always bring up something about how she is failing. Good subject, then I slowly change the subject.
If the teacher asks something in class, then you should try to answer, even if you are wrong.
It will show that you don't care, and that you are in fact, outgoing.
Like there is this one kid in my class, he just randomly stands up, and all sort of stuff. He is crazy, and girls love talking to him, because he is so spontaneous.
You have to be your own man, and not care, and not do something just because everyone else is doing it.
Now this doesn't apply to everything, just the way you act, and what you say.
How this would probably turn out in reality:
Me: Oh, [What she is getting], I love that.
Her: Yeah...
[I stand there looking like an idiot, while she just sort of looks around]
:
First remember, you only look likre an idiot in your mind.
The girl probaly thinks she looks like and idiot.
Just be energetic, and always be someone that people will remember.
There is one kid, I personally think he looks liek ****, and yet he is so energetic, and not caring, that he can get any chick.
Outgoing it the attitude someone assimilates, if they don't care what people think, they love having fun, and they are fun to be around.
Be that way, and girls will surely follow.