Know what he likes most and whatever it is join it and first become a good comrade until the attraction chemistry develops in him. Do not hurry him but get involved in similar activities and definitely you will be able to determine the right time to tell him how you feel about him.
Being yourself is a great way to have a guy notice you. Show your sense of humor and don't be afraid to be silly. A great way to flirt is to make eye contact whenever possible and smile. You don't have to overdo it because guys like down to earth girls.
You can't MAKE a guy like you. Just be yourself. That's the best thing you can do. It's better than pretending to be someone else and then the guy finding out later. If he doesn't like you then he doesn't like you.