Well this is not actally a tutorial but the measurements I have on my sidewalls. I built this by looking at pictures so the measures are in no way accurate to the actual aircraft, but still looking OK.
I have measured after building was completed so doublecheck and adjust if needed
Good luck and have fun.
There is one measurement missing on the drawing. There is a line at 41mm and a line at 19 mm with a 7,5mm piece at a 45 degree angle. So the distance between 41mm line and 19mm line at a 90 degree angle is 50mm.