The eyes

 With the nose and lips done, the last of the facial features for this mask section are they eyes. Using the same techniques as before, they will complete the mask. Select the edges in sub-object mode around the eye socket, hold shift and drag then to create new faces.

Some tweaking later and the turbosmooth modifier back on...

Again, many tweaks will be made throughout the project, but for now, the general structure of the face is there.