Client screen

If you installed the mod on client, you can use keybind k to open skin changing screen.

If you play on servers that have installed FabricTailor on their end as well, screen will function normally. Otherwise, you'll get an error message.

This doesn't mean that mod cannot function server-side only! It can, but players then have to change their skins via commands, if they don't have the mod on their clients.