When posting to Facebook I like to take the time to create custom images, not just default to the images Facebook “pulls” from a page link. Sure, it takes a little more effort, but I think it’s worth it. It gives me more control over the presentation. Use images that are at least 600 pixels wide. Most of mine are 700+ pixels wide. If you use these larger sized images they’ll get more visibility and attention in the Facebook feed.
Take a look at what I’m talking about at the link below. Look at today’s post compared to my post yesterday.

https://www.facebook.com/weddingbusinesstoday/