I just recently finished the first version of a blog (here: http://northernconservative.com/ ), but whenever I share a post on social media, the thumbnail image is the atrocious scaled up version of one of the social media icon's I have on the footer.
I would really like that the thumbnail image be the logo which is on top of the site. According to my research, I could make it my Blavatar, however I ended up discovering that I could only use that if the host was also Wordpress, which it isn't.
Regardless, what could I do (if anything) to use better images to appear on my thumbnails whenever sharing links? I have also attempted to add an image on the post, but that doesn't come as an option for the thumbnail image either.
Thank you very much!