I pinned it myself- I have seen so many people who just wait around for other people to repin their pin. No! That is not how you get it out there! You have to put in a little work yourself and repin your own images in addition!
Luck-Now I am going it admit it, Pinterest is kind of just a luck website. Sometimes you get lucky and the right person repins your pin and then a couple dozen more people see it from that repin and repin it themselves.
Share it- Consider tweeting the link to your pin or the original posts a few different times, even if it has been awhile since it has been published. As long as the content is still relevant, you can share things from your archive!
Also, keep in mind that I have pinned dozens of pictures from my blog before, and most don't get this attention. Do not expect to get 50 repins on your first pin from your blog!
Tell me if you do any of these, or what you do to make your pictures more appealing in the comments!