I made a few models with the physically based rendering workflow for unreal engine and sketchfab in mind. Here is a small demonstration.
Most of the modelling, uv unwrapping and baking work was done in Blender and most of the texturing in Photoshop.
Helmet | Samurai Kabuto
Textures: Base Color, Roughness, Normal, Metalness
Reference
Glue Gun
Clarinet Case