In these photos you will see "Old Guy Scott" painting the inside, then papering off the whole car in order to protect the black paint from the white.

Photo #355 shows the blue fine line plastic tape used for the two curved areas. This blue 3m tape is the only kind to use if you need to make any kind of bend in your masking layout. 

Photo #357 "Old Guy Scott" shows the blue plastic tape that needs to be pulled when the paint is still wet and tacky, this will make the paint line razor sharp, for an excellent look. If you have less experience you may want the paint to tacky up a little longer. Photo #358 is pulling the fine line tape, for straight lines only. Photo #359 shows the work completed to perfection......