It’s because you don’t have any facebook open graph meta info in your header.
You need to reference a specific image with
<meta property="og:image" content="http://www.stormdesignprint.com/your-image.jpg" />
<meta property="og:image:width" content="685" />
<meta property="og:image:height" content="386" />
Once you’ve done that though, you’ll need Facebook to crawl your page again, they have a debug tool at https://developers.facebook.com/tools/debug/ to show you exactly what they see when someone links to your page.