i have not done 1 of these in a while.
i took some pics of the WIP for he customer [i tend to do this with most orders]
the "camo" is etched on.
i rub the blade to remove grind marks [i do this on all blasted or coated blades],blast,mask using nail polish, etch using FeCl,rub lightly with 2000 grit paper.
this last step gives the pattern a 3D look.