How to contribute to Spatial Gallery?

Basically the title - I’ve been really enjoying the spatial gallery and noticed that there are some posts attributed to ‘regular’ users like us, as opposed to the stuff posted by apple or the other brands. Is there a way to upload our own content to share? I’ve got a lot of great spatial photos I’d love to put out there, and it would be cool to be able to follow others and see their content as well.