Important material parameters related to velvet:

Normal: used to model the bump of the velvet fabric itself

Specular: used to simulate the luster of the velvet surface

Falloff: Use attenuation to simulate the effect of dense, flush, glossy lint on velvet, where the surface of the material is tangential to the camera's line of sight and the whitening effect is more obvious. The higher the attenuation parameter, the more pronounced the whiteness.

AO: Ambient Occlusion (Ambient Occlusion) channel, through the AO map and the base color mapping multiply, to strengthen the corners and seams shadows, to enhance the role of three-dimensional details, used to simulate the unique surface of the lint rubbing traces.

Material library - Leather - velvet "velvet 01" "velvet 02", that is, the use of this set of mapping of the new velvet material.

You can combine more velvet materials based on the above principle by changing the base color map and adjusting the UV parameters according to the current usage scenario.