after alot of trial and error, I have come up with a great way to do splinter cammo. First you paint the cammoed item tamiya field grey, then you take Tamiya J.N. Green and paint the green pattern. Next take taimya flat brown and paint the brown pattern. Let that dry for atleast 4 hours... but preferably overnight. Finally take an Ebony pencil and draw on the splinter pattern. Put a flat coat on the entire thing and you have good splinter cammo
it worked great for me.