Eric sent this really excellent digital collage.
(I'm calling it "optical texture" only because the card itself feels smooth.)
And the scale is perfect, so much so that I expect a dude's face on top of the neck...but it is that silly monkey, every time. :)
Eric's blog, My Mail Art World, is chock full of detailed mail art exchanges and lots of pictures. You should check it out if you're unfamiliar with it.
Also, this postcard came all the way from France, so you'll find a shot of the postage below, because I think it's pretty.
When I mailed those postcards, I got a bunch of postage stamps that looked very similar to this one, only in purple!
Here is what I sent to Eric.