Maybe we should make some kind of 'seminar' on how to make a hakama. Everybody bring a couple of meters of fabric, a role of thread and a sewing machine.....
I have made both of mine just by looking at a store-bought hakama that i borrowed from a friend (he wouldn't let me tear it apart for measuring though
). Maybe a good start would be to disassemble an old worn out hakama and use it for a basic pattern. The tricky part though is to figure out how the pieces should be varied in size and shape to make hakamas of different sizes.