I did this for Jimmy Palmiotti and Joe Quesada's Ash comic in the 90's.
The thumbnail sketch is very small, about two inches wide. From there I went to an 8.5 x 11" layout, copied it, filled in some black areas with a marker and finally the final art. I didn't save a copy of the pencils.
I like the layout better than the final version. It lost something.
