Link : https://youtu.be/Wa0KUgCIMrQ
What you need
Gimp 2
DDS Plugins for Gimp 2
Adobe Photoshop
DDS Plugins for Photoshop
I'm glad if this video helped you :)
My Mods
Kamille Shy
Kamille Shy CME
Elena
League of Legends Ahri PC Voice
Victoria Velina Original
Victoria Velina Revamed
Sapphire Revamped
Emily the Silent Avenger
Succubus Preset for ECE and Racemenu
Hikari
Shyvana
Mawari UNP
Creating a standalone NPC using ECE (tutorial) <-old
How to apply any custom NPC's face to your character with Racemenu 3.0 (tutorial)
Creating a standalone character (tutorial)