https://courses.patataschool.com/fabric-collection-vol-1

Patata School – Fabric Collection : 11 minutes | We created this huge library of Fabric Materials to help you bring more realism and a hand-crafted feeling to your renders. It’s as easy as adding them to your Octane Library so you can drag & drop any fabric you could imagine into your project. Here we’ll show you how to get started and how you can edit the fabrics to get personal, unique results. In this introductory tutorial we’ll show you how to apply the fabric materials using Cinema 4D and Octane render.