Outlining the Lettering on Conrail SD40-2 6373

When outlining the lettering on a locomotive drawing, it is important to be patient.  Lettering around curves, such as on Conrail SD40-2 #6373 does not have a smooth, straight line.  This can be a challenge.
Patience while lettering is key, as you have invested many hours into the pencil lines of your locomotive drawing.  Many observers, however, will look at logos and read slogans on the finished locomotives.  This is why it is important to practice lettering again and again.
I suggest practicing lettering over and over on a spare card.  Lettering must be done with confidence, and if the only chance you get to letter is on your finished locomotive, often you may be frustrated.  You simply will not get the hours of lettering practice you need if you save lettering only for the finished work.  Enjoy drawing trains.