I wanted to put forward an interesting tool someone introduced to me. It's an AI face reconstruction tool that can help creators wishing to put forward 'realistic' looking face.
If the reconstructed face is closed to your HS2 character face, it means the proportion you applied are pretty realistic overall. If you see big differences between your character and the reconstructed model, it means your character is probably all wacky in term of proportions.
For example, anime styled character with eyes the size of golf balls and gigantic lips are gonna come out completely different when the AI attempt to reconstruct the face.
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You can generate a higher resolution version of the AI reconstructed face by applying "0 color weight" and "0 structure weight" on the generated image. And if you are adventurous enough, that image can be used as a template to generate interesting face overlays.
Example below:
In the case of the example below, the generated AI face can used as a guide for more realistic looking face: the first easy edits can be made for instance are the eyes and the lips. Further tweaking can be made later on on the jaw line.