I really like pics 11 and 12. The way she pulls her legs back and spreads them aside gives her lower body almost a hip onahole sort of look. Pulling her legs back like that bunches up the fat and really exaggerates the puffiness of her pussy, while also spreading her cheeks and giving you a great look at her butthole along with the slightly darker shade of skin around it. I think the way it displays just how connected these parts are is what really gets me, though. It's easy to isolate the individual parts and forget that each one is part of a harmonious whole.