Currently, you could export the individual layers and build a creator in your game for your players to customize their avatars. I'll also get a folder ready for download that has access to all of the sprites so you don't have to tediously export each layer.
Thanks for your reply. A folder with just all the separate assets would be very useful.
Does that mean your license allows for using this asset pack to implement a character customizer in-game like I described? For a singleplayer-only game, and the character is not meant to be exported to be used outside of the game.
Your license does not explicitly mention this, I would appreciate it if you also update your license for future reference.