I love the way you handle arms, shoulders, and -- well, I was gonna say the lines of the back, but then I saw that the stomach region got attention, too... and on the before image, the rib curve is pretty tight. So WTFever, I just like it all.
Though "After" feels slightly disproportionate in the neck. :|
Definitely doing better at making younger characters look their age. More rounded features would help, but I understand if you're making them "sharp" like that on purpose.
Me too. Unfortunately, it also appears legitimate - I'm acquainted with girls whose proportions demonstrate an even greater lack of intestines and kidneys.
Love the body freckles. Knees and hands were well-done. Might want to throw definition on those jaw things; at first glance, I thought she was horribly deformed - that they were deductions, rather than additions.
EDIT: The reason the thinness appears so striking, methinks, is that the waist is from a 16-year-old, whereas the hips and thighs are from a 20-something.
This one's an interesting one. She's actually 21 in this picture, but she's very short and in some ways underdeveloped for medical reasons. Her body is supposed to resemble more of a 14-year-old than anything.