Sketchbook fun!

Here are some rough sketches I've done for the Hulk piece I want to do...  I'm trying to figure out the face, since with different artist come different interpretations.  There are some basic traits of the character that I'm keeping, but everything else is negotiable.  This first doodle I did in the car on the way to Miami.

It's too gentle for the character in my opinion, but I still like the way it looks.

This next one just reminds me of Will Eisner's work.

 
Once I figure out how I want the face to look, then I will work on the pose.