Thanks for reaching out. Do each of your posts have a Featured Image added? The new layout won’t be noticeable without a Featured Image added to each. We’d need to see the blog page in question to assist further.
The layout in question is the Blog Archive Layout, unfortunately, it only applies to archive pages, it doesn’t apply to single posts. You’d see it take effect here for example http://jdee1training.com/news/ but would need to enable Appearance > Customize > Theme Settings > Blog > Archive Featured Image (Display the featured image on the blog archive pages.)