What remains is the middle layer, that is, the three lines of masking tape with fairly homogenous distance in between. Straightforward...
Time for the actual paint job now.
The only thing remaining to do is to wait for about half an hour to allow the stripes to dry and peel off the three masking tapes. Voilá - your brand new pinstripes.
All right, I admit that if you take a close look, you can figure out both edge and paint thickness faults here and there. So what, we attempted the most challenging work of the entire restoration together and the result is just perfect! Any objections?