Here's a look behind how I made this Captain Amerca sketch at SDCC 2013. The sketch owner actually dressed in this costume at the show - I'm sure you can find pics online - about a million were taken while she was in front of my table.
Initial rough in on 11 x16 Canson Mi-teintes Paper, drawing with an Col Erase Scarlet Red Pencil. Then I go straight to "inking" the outline of the drawing with a small tipped (S, .005, .3) permanent pen (to avoid bleeding when I later use the Copics greys).
I start with the face on these because if it isn't happening here - no point continuing with the sketch.
After getting the drawing "inked", I use Copic Warm Greys starting with the 2 and continuing up with to 3, 4, 6 and 8's for adding all the values. I then come back with the Pigma Graphic 1 and with the pen Dave Gibbons introduced me to in Australa, the Zig Mangaka Pen F to ink the final lines.
I then use White Prismacolor for highlights.
Looks like we could use a background.
Here we go, much better ;-)
And the happy owner, thanks Stephanie!