How do I get a thumbnail image in my blog post to appear on the main blog page?

Hi All, 

I am trying to design/set up a blog page for my client and I am using a blog template on version 7.1. I can't seem to figure out how to get the thumbnail image to appear that corresponds to the blog post. As shown in the screenshot below (it's the first blog post in the list on the left, the rest are existing from the template) you can see the title of the post is there, but there's no image above (unlike the template's post next to it which has it's default landscape photo.) What am I doing wrong? 

Thanks in advance for any help advice.

Did you ever get an answer to this? I'm having the same problem.

I'm having the same issue. I also can not file the way to change the thumbnail of the example posts. I try to find the way to create the thubmnail and it makes me crazy now!!!

Click the post name at the top of the page (see arrow on image attached). An Edit Post box will pop up. Click Options to upload the thumbnail image. 

On 1/26/2020 at 2:41 PM, meganheath said:

Click the post name at the top of the page (see arrow on image attached). An Edit Post box will pop up. Click Options to upload the thumbnail image. 

YES YES YES thank you so much, Meganheath.