go to the gettheguy channel on youtube!!

It's different for everyone,and you have to be careful because you can cross the line and be a bitch and guy will lose interest...
But some "basic" things are: So called eye flirt,you look him in the eyes and make little smile,not one of :D smiles,just :) and look away.It's not playing hard,if he tries to kiss you and you turn your head away,you just need to teas him a little bit.for example if he asks your number,don't give it right away,say like you don't give your number to strangers and "eye flirt",then if he asks you to go out,first say like you don't have time.have other plans etc,2nd time he ask you say yes,etc..Cuz if you cross the line,he may thinks you;re not interested and he'll give up..But it's different for everyone,it's hard to write exactly,it will be easier for me to say this not write and ,if I know your situation,I might help you better :))