Importance of Thumbnail and cover Photos of blog/post

I just realizes that I put a lot of effort in my thumbnails of the posts. Think that this is very important to attract readers to your blog and it is first thing that people see while scrolling on the interface page.
Here I share some of those with Steem/Steemit/Dtube/Threespeek and other Steem apps.
Hope you will find them interesting.