for the art I'll have to replay it to give specifics, for standing pictures usually I like just a bit skimpier clothes, with areola slip, shorter skirts with underwear showing, thing like that, something that makes the protagonist think that she is showing to much skin but not that much that he calls her out for it. You "just" edit the images and don't edit the game itself right? without adding stages of "corruption/lust" it's difficult to add situational clothes, like cum stain on the shirt after a blowjob, half dressed after she was almost discovered and thing like that.
this is the "changelog",