The GIMP filters really do make things easy. I mean, I'm pretty sure there are Instagram filters that would do this just as easily, but this way I can say that I used sophisticated photo editing software.
(Click to make it bigger -- it looks better that way.)
I'm making one image a day for Thingadailies.
My original degree is in electrical engineering, I was a veterinarian for a while, and then I spent more time as a programmer for a large cell phone company. Now I'm my own boss. It's all good until the money runs out...