All good info above.
If you're planning on any tight radius curves, you may also want to get a scrolling/script brush. Making tight turns with a sword can be a pain in the ass!
1-Shot is definitely the best flowing enamel for striping, and "over topcoat" apps. There are other, faster drying striping paints available from House of Kolor, SEM. If you're going to clear over the stripes, those may be the way to go, but they aren't as opaque. Some clear coats have an extremely undesirable effect on 1-Shot!, though I've used PPG DCU2042 over it without any problems.
Grab a piece of glass, load up the brush and practice, practice, practice!