It's just not an easy process.  You approached the workflow logically, which was an error lol.

First thing, do some research and pick a pre-existing texture pack that closely resembles this girl's makeup, eyebrows, skin shade/type and load that up as your baseline.

Now go ahead and morph.  I have had better results working from the bottom of the list up, rather than the other way. 

Use Magnets.

Spawn a full body morph, reimport it, set everything back to zero.  Wait a day or two, and repeat the process.  Create 20 frames and at one end, set the first morph to one, on the other end set opposite morph to one.  Now go over the anmiation and look for the perfect blend of your different takes.

Now do this 5000 times over six years.  Realize it's never going to be perfect.  Here's mine: