So I was informed by one of the moderators that my post's title was not specific enough. So I decided to just create another one that aligned more with my problem and deleted the last post. Hope that's alright.
So I am trying to create the same kind of grungy type texture of this chair (the one that the girl is sitting on),
and I am having some trouble. This is what I have so far in Blender:
Unfortunately, I keep getting these spots that are weirdly pixelated like this:
Does anyone know how I can get rid of that weird pixelated effect on my grunge texture??? Also, in what ways can I get my material to more closely resemble the texture of the chair in the first image?
I want to create this texture completely procedurally, and I do not want to use an image texture. Here is a copy of my blend file, and down below are a few screenshots of my node setup.