1) Be positive and approachable – If you want to flirt with the guy, don’t be rude, arrogant, or pass cocky comments. Because, no matter how attractive looking you are, you won’t be able to get his attention, as the guys are avoiding that kind of girls. Instead, be positive, smile, talk normaly with him.
2) Comliment him – It’s known fact that the girls like compliments. Well, guys like them too. And when you compliment him, he will instantly see that as a sign that you’re interested. Also, encourage something that he does, especially if he is trying to do something with/for you, because he’ll give his best to impress you