I love your blog posts, but there is no image (featured image, og:image on all of them…) - so when we share things on Facebook, Twitter it doesnt look good, or every post looks the same as featured image is the same (lets say on twitter): 
and lets say different post on FB: 
- In some cases FB,TW will take first image from a post itself but most of the time it wont without using FB debugger…