What did you use?
I have used various metal tools for wood grips. Nail Setting tools make an interesting look.
There are soldiering irons with multi tip options out there. Depot has one cheap
http://www.homedepot.com/p/Weller-2...et6JjOMo5odsDfU_6RjZ4aAv508P8HAQ&gclsrc=aw.ds
I like stippling. Practice on something you don't care so much about. Uzi grips are hard to stipple!
Interesting!
One could do patterns, borders, backgrounds, etc