Intermediate morphing advice

baalhug

Hi, guys:

I'm willing to start making my own morphs for base figures (Genesis 8 mostly). I have been tweaking with Blender sculpting, and I've been able to do the export-import process succesfully. I have done some morphs this way but I have faced my first hard-to-solve problem. When I sculpt the eyes in Blender I mask out the eyeballs so the sculpting only affects the flesh of the face (to keep the eyeballs untouched) but I realised I can't edit the eye lids or vertices can get too separated or even inside the eye balls, so I'm wondering how pro modelers do this. ¿By editing vertex by vertex and approaching them to the eyeball "by hand"? I'm guessing this problem will happen for the mouth too (lips and even teeth), and probably in other places like finger nails.
Do you know any technique to face this or any guide or tutorial I can find somewhere? I have already seen some basic tutorials but none of them address this issue, they all modify "easy" parts of the body, I mean, places where skin is homogeneous and you don't find "pieces" you don't want to alter (like mentioned eyeballs, teeth or nails).
Any help is really appreciated.