How do you flirt with a girl you really like?

Ok, I'm an 16 year old guy and i aint that good of a sweet talker...I need some help to ask out this girl i really like...like how do i grab a girls attention? What jokes shouldnt be said? How do I ask her out? All this can be summed up in how should i flirt?How do you flirt with a girl you really like?
OK i'm a girl and what i like is a guy with a sense of humor. Insult her but in a nice way if that makes sense, like call her shortyy if she's short and then laugh and out ur arm around her or something , then she will know that you notice her.

Compliment her . if your nervouse then do it subtly, so just say '; you smell great , what is that ? '; or '; You did great in running today , i hate to say it but you whipped my *** haha ';

Use a prop, its such a good conversation starter. As you spend more time with her then you will feel morre confident with her. Then ask her out :)