The same image, diffrently coloured and amended four times, using photoshop. Pencil and pen before being scanned into the computer. I don't know how many times I've thought about this idea, and then not done it, because of the work involved. Well worth the stiff neck I've ended up with after all the effort.
Go, Bid: Stan And Sharon Sakai Art Auctions Going On eBay - auctions here; explanation and direct donation possibility here
21 minutes ago