Face Fit

The green loop shows the outer eyelid selection around the eye.
Face Fit: Eyelid Outer
Select the outer eyelid edge loop.
Select the edge loop around the outside of the eyelid.
You can also select a vertex on the edge loop to identify where to separate the upper and lower eyelids.

Tip: add the split vertex when AdvancedSkeleton needs to know exactly where the upper and lower eyelid sections separate.