Leather material

Sorry to make some qeustions about cycles materials , is because i´m a noob in cycles , and i need to know how to make a those materials to my project .
Anyway , i´d like to make a photorealistic leather material , but i can´t make it so much realistic .
How i can make a leather material like this leather that you can see in this desk chair?

This is part of a couch I modeled and is using a great procedural leather shader made by elbrujodelatribu. It’s available here on blendswap.

This one is “leather-black-new”, with the bump strength turned down to 1 (from 2)

All of elbrujodelatribu’s nodes are incredible, you might want to just get them all.