Here’s my simple method for painting a Stormcast Eternal for Warhammer Age of Sigmar, using a striking white and red color palette. The metal areas use a base coat of Leadbelcher from Citadel, and this is weathered using the classic combination of Typhus Corrosion and Ryza Rust, finished off with a bright highlight of Stormhost Silver.
Paints used (with Amazon links):
Ulthuan Grey
Nuln Oil
White Scar
Khorne Red
Evil Sunz Scarlet
Leadbelcher
Typhus Corrosion
Ryza Rust
Stormhost Silver
Retributor Armor
Stirland Battlemire