Micgaz

Watch the depth on the back of the head, it needs to be more that that. Also the width of the head, as the Guys have said already, is too narrow, the width of a typical head is 5 eyes across, thats including the space between the eyes across the nose, so: outer head, eye, nose bridge,eye, outer head = 5eyes.

Good going though, and its good to see you worry about the ear later, and get on with the rest first instead of rushing thru. Try to leave around 6 -8 polys for a rough ear shape, you should be able to do something quite reasonable then. get rid of the neck right now because the geometry there is dictating the polys for the ear and causing alot of tri's to appear, which are easily avoidable, you can take the edge flow straight from the cheeks to the back of the head, deleting excess edges as you go, that should tidy that up a fair bit

Cheers
Jay