the question is not: is she perfectly anatomically correct when compared to scientific modeling tools ? I could have done that easily. the question is ; "how does she look" ? appealing? or is something "wrong" In your opinion...... boobs too big? head too big? feet too ugly? butt too big? butt not big enough?

I see what you are saying, i personally wouldn't use a cage to size my character, because i think you might risk getting something that is a bit to robotic, but it can be a good idea for practicing. But for me a human is not that different than for instant modelling an advanced machine, in the sense that the underlying structure is carrying the surface. In a human its the bones, muscles. If these are wrong the skin wont look correct either obvious.

Now the biggest difference between a machine and a human, besides the obvious of course :), is that we as humans our self are extremely effective or good at spotting if something looks odd when looking at other humans, which makes it a hell lot of harder making a human model compared to a machine, because we expect less or are not as good as recognizing machines as humans. But there have been a lot of scientific studies of for instant beauty, which RorrKonn also sort of mentioned. so my point is that even though you mention that you are not that concern whether she is anatomical correct based on a scientific model, its very important i think, because if you are to far away in these proportions it will be notice automatically, maybe not down to every single detail, but we will recognize it as if something is wrong.

And that is where anatomic reference images gets handy, because they can help you place bones and muscles correct and with these you can place skin on top.

So at least to me at first glance, i think the feets are to big. I would also reduce the breast size, simply because they seem a bit out of proportions with the rest of the body. At least while you model her i might be a good idea. Because breast size tend to follow the amount of body fat. But its not a heavy model.

I think the legs need more volume, it doesn't seem to be able to carry bones and muscles while being that slim.

I also think the wrists are to narrow and the forearm are to long, again if you look at the anatomic illustration and try to draw a straight line from the wrist across her body, you can see it insect higher on her hip than yours does.

I think you hip area is quite good.

The head does have some problems, which i mainly think comes to the cheek and lips area, something seems wrong here, but its hard to see with out a closer look. And still think the former suggestion would fix most of it.

The bones connecting at the front, (Those going from the middel of the chest, just below the neck to the shoulders) need to have a bigger gap, they are to close together i think.