First of all, a very big thank you to the entire development team for all the hard work and effort they are putting into this! I appreciate the dedication and attention to detail.
Regarding the specific feedback on Female Miqo'te, Face #3, Eye #3, Mouth #4, I've tried to make my comments as clear and constructive as possible in the hopes that they will be useful.
Overall impression on the new benchmark
I think the new benchmark is a big improvement, the lighting is much better, the colors are more vibrant, and the facial details are much more defined. I think a few small tweaks to some details and some adjustments to the shadows would improve it even more.
https://imgur.com/a/slAljby
Female Miqo'te Face #3 + Eye #3
https://imgur.com/a/jKTCOfJ
Eye Shape: The shape of the eye in the new version appears more rounded above, giving the impression that the character is keeping their eyes wide open. In the original graphic, the eye had a more relaxed and focused expression.
Lash Length Variation: In the original graphic, the upper lashes were shorter near the inner corner of the eye and became longer near the outer corner. In the new version, the upper lashes are more even, with the lashes being slightly longer near the inner corner and shorter toward the outer corner. I think that this change in lash length variation contributes to the strange expression in the new version.
Upper lashes meet the skin: In the original graphic, the black line where the upper lashes meet the skin is thicker, creating a smooth gradient effect. In contrast, the new version shows a sharp transition between the upper lashes and the upper lid, resulting in a distinct thin black line. IMPORTANT: This issue is not present in the first benchmark (1.0), where the upper lashes correctly meet the skin, achieving the intended effect perfectly in my opinion.
Eyelid Shape: The inner part of the eyelids (skin that forms the eye socket) appears significantly thicker in the new version. This increased thickness sometimes fails to follow the natural shape of the eye (maybe the eyeball model was positioned slightly more inward than before?) As a result, the eye appears slightly smaller in the new version. Additionally, this altered shape creates a strange effect when viewed from certain angles.
Overall Expression: The cumulative changes to the eyelid thickness, lash color, and lash length variation give the impression that the character in the new version is keeping their eyes wide open. In contrast, she has a more relaxed and focused expression in the original graphics.