Frédéric Raoul from Chestnut Ink has put together a step by step breakdown of how he painted a Rhino Banner Warrior from the rhino rush release. You can find the tutorial at the links below.
https://drive.google.com/drive/folders/1equ3qnunwqprmyuvaagq20dgonlnacww?usp=sharing
https://www.myminifactory.com/users/GoonMasterGames?show=posts#panel2-11