>>296906I was going to suggest that, his arms ought to be forming triangles, grabbing her ass/thighs.
I mean from an artistic construction standpoint you'll have an extended 'triangle' as well as, well, a sort of Star of David arrangement with the arms and legs, cock, and tits.
maybe because it's hard to see up there when your face is buried in a girl's crotch, so I don't know... but I'm not sure that's the type of face one normally makes when getting eaten out? I mean it's a very interesting expression but it makes me think she's grossed out or something.