Part 4: Modelling the head (continued) Ok, Let's attach the ear. You may need to make some new edges to the head/ collapse some edges in the ear. As long as it looks clean in subdivision, it should be all right. 
Now we need to make the neck. Select the jaw edges and extrude them downwards, but remember it goes a little inwards too... 
Heres the finished result of the head I made.     |