Simon! First, dont cut the feather to short, then cut the fibres and leave about 1mm of it on both sides, NEVER "clean" the stem with your fingers ripping the fibres away.
Then wound in the for ex Indian crow all way of the stem, for real chatterer wich have a very high profile you have to wound the first two turns quite gently and then harder after the position is fixed.
Hope this helped you out a little.
Good luck!!
I did fine now I think :) The vielings got in proper positions for my own taste. I used the plier to flatten the stem. Cut the fibres instead of stripping the stem. And then I used the 3,5,3 method. This became the ressult