A shirt with the anatomy of the heart, liver, stomach, small and large intestines, spleen, and gall bladder.
It started out with my friend and I wanting to make our own shirts for Warped Tour this summer, so we were on a search. I saw chelsearaye's anatomy tank and I loved it, so I decided to do my own, but make it a little more "graphic." The only reason this is "so-so difficulty" is because it depends on how much detail you want to put into it.
Also I am just guessing about the time. As stated before, the more detail you put into it, it will most likely take you longer.
Once you've either free handed or stenciled the organs on, you can start to paint.
I personally recomend starting out painting the insides first, no pun intended, and then outline them with black.