Male Head Sculpt Feedback

About a year ago, I discovered Kent Tremmel’s ‘Realistic Head’ series. After at least two attempts, I’ve come up with this:

There are some obvious gremlins in the fine detail sculpting, and the ear leaves much to be desired. Still, any thoughts?

Note that this isn’t a scene, just a model, and that lighting, composition, and material work wasn’t at the forefront of this creation.