To preface this, I'm 18.

I remember the first time I heard that women routinely smile at guys. I make tons of eye contact with women, but I couldn't recall one time a woman smiled at me in response that wasn't my Grandma's age.

I consider myself rather attractive facially, also I'm 6'3" so I doubt I'm repulsing them or anything.

I have been told however that I have a cocky/arrogant/Hollywood face, so that might have something to do with it.

Anyway, not sure what to do since I can't really tell if a girl is interested in me, the best thing I have to go on is catching them looking at me multiple times.