How did I do this?

Now and then I pop into my Picasa web album which is where all my uploaded drawings mysteriously land up and I find stuff that I cannot fathom out how I made. I try to stick with one piece of software but some drawings are made with four or five different programmes. Yes, I know I have already posted today. I am in acute diversion activity.
Anyway, here's a link to a very good cause and to the memory of a very nice blogger called Kaz.
http://www.justgiving.com/kazblog