From a guys POV i suggest following, be mature, be intelligent, be nice and funny and not letchy. Be kind, smile and show you are someone who nice girls would want be around.
Talk to girls, ask them about themselves and their dreams, their talents. Be fit and sporty, eat well and look afteryourself, girls like guys who care about their fitness, hygene.
Dont over talk, listen, then listen again and remember what they said.
Be yourself, dont gob off all the time, and be classey and have presense too.
Its quite easy really but just do the above and move into who you want be ultimately....