How do I get more followers on tumblr?! Will choose best answer?!?

[Manny]

Hey. I just started using my tumblr that I have had for like a year lol ( I started posting stuff like 3 days ago). I post pictures and gifs about The Vampire Diaries. I don't have many followers "19" to be exact so, I was wondering how one would go about getting more followers.. I'm not aiming to be tumblr famous or anything like that, I just want to have a blog that people like to see and they ask me questions. I gain a couple of followers a day, (I gained like 9 yesterday but today only 3 so far) so if I just continue to post more things will I continue to gain more followers? Or what, how do I get more followers? I have just noticed that the reblogging/following has slowed down today and I just need some info. Thanks so much!
Also if anyone wants to check out my tumblr and follow it or give me tips that would be awesome! http://serenedipitty.tumblr.com