I've noticed something while drawing these and the few pages of "My Girlfriends Mom 3" lately. If you really want to know if you have mastered drawing female anatomy: Draw them in underwear. Drawing with clothes is easy, drawing with nude is doable, but with underwear suddenly you're not allowed to cheat here or there anymore, you have to know your stuff, otherwise it will look wrong.
The big panel on the first page here is a callback to the first chapter, something the author specifically noted.
It's kind of funny, whenever I do the concept sketches for any comic I always think "I totally have forgotten how to draw these character" but when it comes to the final sketches it somehow always look as intended. Weird. Somehow drawing proper anatomy helps my brain to add in correct hair and facial features.