There are five .png files in "CustomHeads/Template.zip" archive in the game installation folder. The installation folder can be opened by right clicking Fury Unleashed in your Steam Library -> Local Files -> Browse Local Files... and the extract the Template.zip file to CustomHeads/Template folder. To make your own custom head you just need to create a new folder next to "Template" folder and put your .png files in it. They need to have heads placed on transparent background, like the examples in "Template" folder. You can use free software like Paint.Net (www.getpaint.net) or GIMP (www.gimp.org) to make those files.

The minimum requirement is to have "Head_Normal.png" file as it is default head displayed on your character. Optionally you can also add the following files:
- "Head_Hit.png" - displayed when the hero takes damage
- "Head_Shoot.png" - displayed when the hero shoots or attacks
- "Head_Light.png" - applied when the hero's gun fires bullets
- "Head_Blood.png" - applied when the hero's hit points is below 30%

The game scans the "CustomHeads" directory and loads its contents on launch, so you need to restart it if you modify the files after it started.

In order to publish any Custom Head you made you just need to rename the directory where your Custom Head is located, then open the game, enter customization, navigate to your Custom Head and click "Publish on Steam Workshop". The Workshop item's name will be based on your item's directory name so make sure you rename it to something that is relevant before you upload it.

The first time you upload an item you will need to accept the Steam Workshop agreement. If you don't then your item will not be visible to other users.