K.I.S.S. shirtings illustration for production

I've been given the great pleasure of designing shirts for the Kalinga Institute of Social Sciences today, and the timing could not be better for I am in the middle of researching the british-indian infantry.
So far, since this is for casual attire, I'm playing with an english spread collar and heightened yoke. Steps taken for illustrating desired design for K.I.S.S. shirtings: