This skull was created for use in another project (which I will share with you tomorrow), it actually took me much longer to draw than I originally anticipated because the inner jawline is a fairly complex shape.
After the skulls outline was finished, it was time to draw the teeth. The top row of teeth were all drawn individually, but thankfully the bottom row were more forgiving and I was able to draw individual teeth from left to center and then duplicate and mirror them to create the lower right side.
To finish off the skull, the eyes and nose sockets were added, with an outset shadow to give the appearance of depth.