Likes for my Photography page on Facebook?

Hi guys, I wanna boost my photography pages' likes and get more people to see my work... Thought posting on here would be a good start but does anyone know any other good tips. I know you can do the whole 'promote page' thing on Facebook but I'm sure there's gonna be places you can post the link without paying right?

Anyway... here's the link so if you could like and share I would be grateful Thanks X
https://www.facebook.com/95aRT