Keeping with the theme of faces, here is a nose.  Supposedly noses are way more difficult than eyes.  I didn't have very much trouble with this, except for maybe the colouring.

"Nose".  Digital Art, 2012

Decided to draw an eye because someone said it was really hard. 

*CHALLENGE ACCEPTED*

Here is the eye that I did.  It took a good 2 days to get it perfect.
Eye lashes were the hardest part about this drawing.  That and getting it to look realistic.

"Eye".  Digital Art, 2012