Ok - you are one who is really searching through these > 400 pages before getting into this game? Remarkable I say
But I fear Schlong50 is no longer into this thread, never heard since I´m here present
You want to create a certain character following a real person? This is the hardest challenge here and is needing a lot of experience about the several tools of character creator.
Unfortunately I don´t know a useful guide for this so far.
Maybe this
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can help you a little to learn about the possibilities of the creator.
The rest is learning by doing, especially for fine tuning with Advanced Bonemod. This function is essential when trying to create a real face.
A little hint from me: when I´m trying to create a certain face I deselect "play game in full screen" and choose a lower resolution than monitor default, so I be able in window mode to toggle fast between creator and pictures from the object, as Schlong implied.
To start it´s easier with anime characters, real persons is the master class of creation.
Wish you succsess and be curious about your first work