Default Picture for posts on the home page

How do you change or choose a default picture for the “post” bubbles on the homepage?

Hey. If you navigate to an individual post in your dashboard area, you should be able to upload an image by clicking the “Set featured image” link in the “Featured image” box on the right-hand side of the page. This is the image that should appear in the circle on your homepage.

How can you make it have a title as the default picture like the example “Hello World” bubble?

If you choose the “Remove featured image” option for an individual page or post, the theme will default back to displaying that page’s/post’s title in the homepage’s ‘bubble.’

Hope this helps. Let me know if any of my points need clarifying or if I misunderstood what you were after.