I’m having trouble coming up with a material in cycles similar to the photos below.
It’s a very sheer fabric that you can see through.
It feels like the answer involves mixing together some number of voronoi textures at different scales and a transparent shader but I’m having trouble getting anything decent.
Hello, a possible solution :
I used three scratch textures (B&W) at different scales, plugged into the “Alpha” channel, on three different overlapping surfaces (see image below).
And the result :
I’m using @fthaler’s add-on : Scratch Texture Generator
I just discovered this, which is perhaps closer to procedural, for scratches : Scratch texture generator (geometry nodes) @mart0nnn.
Good 
