Medieval round shield. All procedural materials included in blend file.
You can add texture as your banner by simply replacing YourTexture.png in material Wood. Your banner will be mixed over wood material.
Shield can be easily subdivided for better rounded look of shield.
Contains 4892 polygons, if subdivided by 2 = cca 20.000 polygons
Previews rendered in Cycles Blender 2.83 - 2160*2160px