Here are the first 48 drawings. There are only 8 copies of each drawing that I signed. Also in each drawing I added a little something extra so each drawing is different.
See if you can spot what I added in each drawing. Put the title and # of the drawing, then what you think I added in the comment below 
April 26, 2011: 64 drawings to do
Here are the first 2 to get you guys started
250 Lives #1 – Lizard
250 Lives #2 – Leg