Basic Forms

Taking notes on proportions sent me back to thinking about basic forms.  For the cranium I am starting with the simplest form, a sphere, and then modifying it to a slightly more complex but still simplified form.  For the jaw I've been trying to to jump straight to a slightly more complex form and it's not working.  Relating the sphere to the more complex form of the cranium has been very helpful so I tried to think of what I could use for the jaw to and came up with a cone. It works a lot better than I expected it to.