This is going to sound more perverted than intended 
Could you not give her a sweaty look by making her skin glisten with some laquer droplets (or similar) it would hide the flat appearence of the skin and add a touch more 3D texture?
It looks quite good in my imagination

Could you not give her a sweaty look by making her skin glisten with some laquer droplets (or similar) it would hide the flat appearence of the skin and add a touch more 3D texture?
It looks quite good in my imagination

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