soyjak.blog

In your profile settings, specifically your about me page, you'll find an input field to be able to input a link to your custom background
Alternatively add [BG]LINK[/BG] to your about me page.

Is it
Account Details > About Me > [BG]LINK[/BG]?

yeah
there should be a button there though.
videos are not supported as backgrounds though.

You also need to make sure you have Schlog+ installed.

Where do I install shlog+? Is it a tampermonkey script or something?

nevermind

Thanks soggy. I really appreciate it.

???
It's a browser extension. You can get it in the projects section of the schlog.

Yeah I just got it. Can I use a youtube video for the music?