So far I have done two lithographs on aluminum plates, the details for the completion on the first lithograph can be seen in these steps.
The first lithograph was based on a student exhibition postcard I found laying around in our classroom.
I scanned, reversed and cropped the image, and increased the contrast in Photo Shop to get a image that I then drew on the aluminum plate and printed.
Final Print click for larger version
The following is my second lithographic print, this picture was based on a photograph by Judith Leclerc, she is a veterinarian who also travels the world photographing wildlife.