Customer Area Thumbnail Image Preview on Private Pages

Is there a way to set a thumbnail image preview next to each private page on a users dashboard? I know I can set a featured image within the post but that doesn’t help with what i’m wanting to do.

To give you a visual example, i’ve screen capped the dashboard as it currently appears on my website, and have put red dots next to each private page. That’s where i’d like to have a thumbnail image preview appear.

I’m not a programmer or coder so if you could explain it in simple terms, that would be greatly appreciated!

Thanks in advance!

https://wordpress.org/plugins/customer-area/