Inny vs outty (how bizarre)
Greg your photo is inverted. I think after scanning Nicks (long) photo, your brain gets used to seeing the light coming from one direction. Print yours out and flip it 180.
If you have imaging software (paint will work) zoom in and notice how hard it is to keep the crater from turning into a dome.
(Iv'e had problems with Mars craters "popping out" at me before but not like this one.)