Tools you will need:
x)Internal Master 12
x)FIFA File Explorer 2014
1. Get the id of the created player with the IM 12
x) Open the xml file in the FIFA 14\Game\data\db
x) Open the squad file with the created player.
x) in the edited playernames, look for the id of the created palyer.
2. Create the dds with the miniface
x) Go to FIFA 14\Game\data\ui\imgAssets\headsfolder
a dds file and change the name
with the id that you get in step 1.
x) Open the new dds file with FIFA explorer.
the png with the cyberface of your choice and save