ive heard you can't fold a piece of paper more then 7 times. but ive only been doing this for 8 years or so (about 2 less then you) and i still haven't figured it out
good luck though! let me know how it works out!
‘Our great industrial nation is controlled by its system of credit. Our system of credit is privately controlled. We have come to be one of the worst ruled, one of the most completely controlled and dominated governments in the civilized world. No government by free opinion, no longer a government by conviction and the vote of the majority, but a government by the opinion and duress of small groups of men.’ - Woodrow Wilson
I just did a few different tri-folds for some clients. The only way I know how to have the printer know which way to fold it, is to print out a copy, fold it, and then drop it off or mail it to the printer. It's hard if your printer is far away, so I would also suggest folding a physical copy, and then photographing it, and send the printer a JPEG. Although, maybe there are simpler solutions.
Everywhere at everytime in the world, the artist has had to be a strong person in order to retain his own individuality.
-Sergei Shutov, painter