Foam work critique needed!

Hi again! :3 I'm building a wolf head and I want to know if I'm spot-on with the foamwork for it.
Pictures here:

http://www.iaza.com/work/121107C/iaza14197039438200.jpg (Front view)
http://www.iaza.com/work/121107C/iaza14197015288700.jpg (Side view)
http://www.iaza.com/work/121107C/iaza14197096832400.jpg (Jaw in motion)

Thank you!