I thought she was on her stomach at first too. The problem, I think, is the arm. It looks too thick to be an arm. In fact, it doesn't really look like an armpit at all. But maybe that's just because the picture is cut off in a weird place. The butt, leg, and boob look fine though.
I agree. Plus photoshoppers seem to constantly airbrush women's armpits. Hello! We HAVE PITS. I mean it'd be nice if my pits were that silky smooth, but truthfully, they're just not. I think cutting in a different place or making the pits more pit-like will help. BUT those are just my suggestions.
Otherwise she's smoking hot...or her body is. She may be a butterface...but that doesn't matter for the purposes and intents of IS.
So for the sex....well, I'm a bit of a prude I guess. I'd much rather there be gratuitous sex than violence, but in both instances, I like books to justify a reason for it. I don't like characters graphically screwing just to be graphically screwing....same with violence. My book that went out on sub and didn't sell was based on a sex act, but I think it was very tame because I don't think there's a need to go into details. That's just me though.
As for the condom stuff, I definitely see where it's important, especially for teens. In my book (if it ever sees the light of day), he doesn't use a condom but someone mentions it later. The sex act is between two very conservative Amish teens who probably don't really have a lot of knowledge about birth control and condoms--but it is mentioned later to the girl.
Romance and erotica books are a different animal though. I don't write those, but the purpose of those is sex (somewhat) so it makes more sense to be a little more graphic.
And the mention of American Psycho, that book just grossed me out altogether. I saw the movie and then read some of the book and I almost vomited. To me, it feels like line pushing for the sake of line pushing. But that's just my 2 cents!