Before I got the scanner I downloaded some of the scans from EdSciFest on Thingiverse to see what the quality of the print was like and if they could be painted (or at least if I was any good at painting them)
I chose this scan as it seem to have good features that would print ok and it gave me enough clues as to what the woman actually looked like originally.
http://www.thingiverse.com/thing:296698
Printed out looks like this
You have to be a bit careful and think about your print before you start in regards to horizontal areas that don’t have anything underneath them. I didn’t get this quite right here as her nose didn’t print.
You can see this clearer here after I added paint.
I also had no brushes and applied the paint with a piece of sponge giving her a rather odd expression. I improved a bit after I bought some brushes.