I'm aware that faces aren't allowed to be shown in art on HEE but if liek to knwo the limitations on that

Can full bodies be shown so long as their facial features are obscured?or must they be blacked out?

are silhouetted side profiles allowed?

I believe means like portaits of faces, you're not aloud to make one based off of someone's face.

I've always thought the faces need to be blurred out

From my understanding, people's facial features cannot be shown. So in my manips with riders, I either make sure the stock rider's head is turned away so their face cannot be seen, or I size the image so that their head is cut off.