Notes:

I wanted to try something and got the effect I wanted:

By making everyone's eyes glowing, I made it seem like the men in the room are very focused on Phryne's body, while in the actual painting their reactions are more towards an outraged/scandalized look.
I made sure to censore her private parts with lens flare, anime-style, and this is a work of art anyway, so you don't have worry about how SFW it needs to be