More from the scribble book...
be aware of horizontal lines that could be drawn from eye to eye, and from nostril to nostril, and the chin. Those lines, or invisible lines if you choose not to actually draw them, are all parallel. right now there is a lot of skewed faces. It doesn't matter if the head is angled or turned, all those lines should remain parallel, like on the punisher one the head is viewed at a crazy angle but all those things line up correctly and it works.
Qui docet, discit.
Socratic method: Conflict breeds creativity.
I enjoy fishing almost as much as drawing...just thought I would share.
Here is some more sketch junk.
Very nice work Shannon. Are earlier pieces colored in computer as well? (yergh, accidently put the word verification in the subject line!)