Zbrush Head Sculpt

Heorogar

Hey everyone! First time poster here so forgive me if this is in the wrong section. I am currently working on a Zbrush head sculpt and i was wondering if yall think im going in the right direction. Right now im having a hard time pushing it farther and i had just a few questions for yall. What is a good way to go about adding in wrinkles like the Standard brush or the slash brush ? Im still very new to this app but so far im loving it.