lightdm - how to set profile picture

I reinstalled the XFCE spin. Previously, the ancient, upgraded, Fedora install originated as a default Gnome install. I switched to XFCE at some point later. lightdm used to show my profile picture on my login screen. I have a distinct recollection of either something in settings, or from the panel that opened a tool which prompted me to select a picture, interactively crop it, and that became my profile picture. But I cannot find any readily advertised tool to set my profile picture, after an XFCE spin install. A few minutes spent in Google led me to /var/lib/AccountsService/users Looking in there, I can see that I should be able to set my profile picture by installing $HOME/.face Is this actually the way to go, these days? There's nothing in settings that invites a non-technical user to select their mug shot, for their profile picture? They'd have to discover this via Google and command line?