https://www.instagram.com/p/BJO4HC6gJ6m/
https://www.instagram.com/p/BJO3AqbA93r/
Take your time. All in all, I spent quite a few weeks on researching various "companies" stippling and grip reduction jobs. I then watched just about every non "bubbad" tutorial that I could find.
After this, I picked up a woodburner from walmart for like $8 and stippled both of the spare AR GI grips that I had. Once I did that, I started tracing in mechanical pencil what and where I wanted my stippling. I turned out the above after about 3 hours sanding and then 8-10 hours of stippling.