Will the blog posts be composed on author instance by content authors?
If yes, then sure you can use CF. You can create a CF model with whatever fields you require (e.g. title, body, etc.)
https://www.youtube.com/watch?v=-Hn3UDJMc98 - tutorial on CF models.
Better idea maybe to just create a component / template with the required layout and dialog fields to compose the blog posts. Then just create a new page using that template whenever you want a new blog post.
This is assuming you want an approach to create blog posts rather than a component to list down existing blog articles. It's not very clear from your post.
If you're talking about allowing end users to create blogs on publish instance then CFs may not be used since they're an author-only feather AFAIK.
