is awesome. on his website he very generously explains how he draws using a lightbox:
"...What happens next is not tracing; in fact it's important that I can't
see the rough drawing underneath too clearly, because when I draw I try
to draw as if for the first time; but I can do it with increased
concentration, because the drawing underneath lets me know all the
elements that have to appear and exactly where they have to be placed.
Normally I begin with the most difficult piece of the drawing - some
particular facial expression, some particular gesture or stance - so
that if I get that wrong, I don't have to repeat the whole of the
drawing. Consequently, it's not impossible for me to find myself at the
end of a session of work surrounded by expensive sheets of watercolour
paper with a small face bearing not quite the right expression in the
middle of each.
There are various other stages at which I may have to stop and start again - the drawing may be finished but uncoloured or even completely finished before I decide that it lacks some flavour hinted at in the rough, or that there's some quality of line or colour that doesn't seem quite consistent with the rest of the book. And sometimes I may do two or three finished versions in the search for some phantom felicity. This comes under the heading of Artist's Neurosis, and later I am not always sure why I made the choice I did or if it was the right one."