I couldn't even begin to know how to get it like that. I'm about as artistic as my dog.
Flat black and let dry completely.
Blue painters tape, torn and layered to make stripes.
Paint it green. Hit w tan on stripes so when tape removed there's max contrast.
Tape patterns will give some topography (when tape removed) so you don't want to put a lot of paint on.
Use matte clear to protect paintjob. Does add some sheen but still not shiny.
Smaller patterns and or more colors tend to busy things up.
Part of a good paintjob is knowing when to stop.
