Except that I really should update that, because a few months ago I moved to a smaller size--13 by 4, which is I'm told the standard dimensions for newspaper comics (I don't think I knew that when I chose it).The originals of daily strips are 15 inches wide by 4 1/2 inches high, with an inch or so of white border space around them.
The theory was that I could probably work just as well, not have to buy bristol so often, and maybe even find greater economy of words and layout by doing it this way. And, I think it's mostly been a success. At least, no one's complained.