Required tables for a blog

[Mohammad Rostami]

Hello. I'm going to make a blog with web2py for me. Each blog post:

1. Has an image. This image is displayed in the thumbnail on the main page of the blog. When reading the post, the actual size is displayed.
   
2. There are a number of images in the body of each post. These pictures are used for guidance, such as how to register on a site.
   
3. Each post has comments.
   
4. Each post has several fields, for example: minimum investment, user privileges, minimum upgrade cost. The way to display posts on the home page is based on these fields and is selected by the user.
   

In the future, this blog, community and other sections will also be added. But now there is just one blog with these features. What tables should I create for my blog so I will not be in trouble? For example, for a post index image, create a separate table or put it as a field from the post table?

Thank you very much for your help.