Now, go ahead to view one of your blog posts

Click on Save Template.

Now, go ahead to view one of your blog posts. You should see the Related posts below it.

Note: If you did not add a label (category) to a post, you might not see the related posts below it.

You can alter the CSS rules if you want to customize the look and feel

Feel free to share your recommendations or or questions via the comment form.

You can also check out:

"How to Add Related Posts With Pictures Under Each Blogger Post "

How To Add Related Posts Widget To Blogger Mobile View

Cheers!