I like the contour. And I see the progress from last ones, keep up the good work!
Critique, no offense (as an art tutor, lol): pupil of the left eye is bigger and has more contrast then right one (that is closer to a viewer), it must be contrariwise. Eyes must be darker because they are in cavities. Also, in future try to be more attentive to ears and necks construction.
Better resolution: s12.postimg.org/p91ot18bh/image.jpg