Try to shape the eye. The outside is generally higher than the inside. The iris of the eye is a small circle that just barely touches the bottom of the eye. Try playing with the sizes of the circle. Again look in a mirror. The top eyelid usually covers some of this circle. Otherwise the subject looks like a deer caught in headlights or that she forgot to put on her clothes before going to school.
Details like the nose, ear and mouth need more attention since they are so complex. More tutotrials on those in the future. Try looking in a mirror or look at pictures to see what makes facial features different in everyone.