I can't believe no one else has commented on this!
The shading is excellent, and the expression is priceless (somewhere caught between "I'm not sure why I agreed to this" and "Do I -want- to know what that thing is...?")! Excellent work!
EDIT: I realize now that this was a linked piece to someone else's artwork.... my point stands, but oops! ^^'
I can't believe no one else has commented on this! The shading is excellent, and the expression is