In this follow up tutorial on how to create Object ID for your fabrics, I only use Photoshop to create these maps. This really depends on your source texture and other element if it's easy or hard. Sometimes you need to do a lot of small tweaking to make it work, and here I show you the main principles.
If you haven't seen Fabulous Fabrics I recommend you do that :)
You find the free texture pack here:
If you have a material suggestion, write it in the comments :)