Ok, since deciding I might do a new template I have spent a couple of weeks researching the remaining subjects (Allied GVs etc.) before settling on the Storch. It simply has a far greater variety of skins that can be done for it, as well as some interesting fabric effects that can be incorporated. Also the 3D shape is mostly free of annoyances like massive UV scaling, mirroring and texture reversal. There's lots of good WW2 photos of Storches, plus lots still flying and in museums (although many of these are actually the metal-winged post war French MS 500 variant) so detail research isn't a problem.
So this is where I have got to since pressing the trigger a few days ago, lining out the wings and tail surfaces. I like to start a template by laying out structural lines in a way that can be easily edited. So on the screenshots below each different colour line is drawn on a separate layer. For example the green, purple and turquoise lines represent fabric effects vertical, horizontal and corners. These lines represent the open fabric areas of the structure. Once I am happy the lines need no more alteration I'll merge those three layers into one layer which will eventually be turned into a mask layer. I've also added some panel lines, rivets and fasteners. Next I will line out the LH fuselage in the same way as the wings and tail and then when I am happy I'll copy/paste everything over to the RH side of the aircraft.
