Arthur, if it were me i would do it like this:
1 Spray your white base the whole job
2 Tape your flames , before spraying the flames cut out your stars(tape or automask)place them in your flames spray your blue
3 Untape the flame and pull off the stars
4 Spray a coat or two of intercoat clear
5 Now tape up your flames to cover them(protect them from the red)
6 Tape up your white stripes (cover up what you want to remain white), now every thing should be covered except what you want to be red and spray your red
7 Pull all your tape and clean up any mis tapes
8 Spray 4 coats of clear and let dry
9 After dry ( the next day)wet sand with 600 grit to get rid of any tape edge
10 pin stripe your out lines
11 Clear with 3 more coats and let dry
12 Wet sand with 1500 or 2000 and buff
i did a helmet not too long ago and thats the way i did it and you get less tape edges this way. Good luck