Hello everybody. Everything projected as expected except for the lips. As I see it, I don't think it's a problem with the photo itself that it's at a high resolution and symmetrical. Anyway, could someone tell me what should I do to correct that issue please?

Adjust lip seam height using headshot morphs and then reproject the photo?

A good suggestion.

Another adjustment to make is lip corner. After that re-project, and the result is much better:

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Thank you for the tip!

Thank you. It's the first time I use this software and my first photo projection as well.