First, know who your followers/readers are. Their age, gender, economic status, what their connection might be to your topic. Consider my book Broken Angel. The main character, Daeris, is an independent girl who has a tight knit family. She becomes rebellious after her mother is murdered and no one will listen when she tells them there is a plot to destroy the royal family.
Which gender would be more likely to read this? female
What would be their age? Since this has a coming of age feel, I'd say mid-teen. However, I know there is a scene toward the end that is appropriate for adult audiences (not that I haven't seen young teens read books with sex in them--one twelve year old student was reading Shades of Grey with her mother's permission). Even so, that is for a parent to decide so I'll bump the age up to eighteen. Now, the other end of the dominate age group might be a bit more difficult. Think about it, what woman hasn't felt ignored, patronized, or isolated because of her views? (connection) Wouldn't she want to see the heroin save the day? Sure! Especially those who are still trying to establish themselves in the work place. Maybe thirty-five, forty?
We now not only have their age, but a possible connection. Of course there are other possible connections--Scotland, mythology, elves--to name a few, but the strongest one would be understanding how Daeris feels at not being listened to.
Okay, Michelle, I have my data, now what? Look for blogs who cater to your identified group and join in. Participate in discussions on your topic. On your own blog, post your review on books that also reach your target audience. Ask to be a guest blogger on a page relevant to your audience. Reach out, become a familiar name, an expert on your topic.
Life is good!