The best way is to walk up to them and let them know how you feel. Period. Every other route, just adds to the complexity.
Show him your ****, and if that doesnt work show him how you can fit his nutsack in your mouth.
Display more & the guy is your's..
******* it never fails
A big smile directed towards him goes a long way!
The best ways to always be attractive for a man is, be confident, better yourself ie: go to school, get a job, work your way up etc., take care of yourself ie: take care of your hair, nails and body.