Nearly Finished Head

The ear model involved extruding the hole I had left for it inwards, because continuing the extrution into the ear. I spent some time matching the vertices to the reference and then appended various sections together. At this point the majority of the detail was there it was just a case of filling in a few holes and getting rid of a triangle or two. Somewhere in the modelling process I have managed to pick up an ngon but as the ear wont be deformed I imagine it shouldnt matter too much. But I am going to go back and play around with the split polygon tool and see if I can remove it easily.