How to add a default image to an RSS feed?

Hey folks.

Is there a way to add a default image for my blog’s RSS feed? My blog is a collection in Webflow.

I don’t normally add images to my blog posts, but when sharing my post to Twitter, I’d like to include the same image every time—just something that people associate with my brand.

I searched for this, but no results came up.

— Peter Akkies