i am far to be an anatomy expert, head is proportional to the shoulders and arms, and Hips are proportional to the legs and feets, but i think that she has a smaller body hips down than hips up. And the hands seems to be unfinished, or be a wip. Look close at the knuckles, too much distance between fingers, and need more volume in the palm. Is a good tip looking for reference images:
-for anatomy reference, as proportion, muscles,…,
-and for pose reference…Pin-up girls show us their beauty with inocence, without aparent intention, but with emotion. Your model are showing us their body without that, at least as i understood what it mean “pin-up girl”, maybe is a missunderstood…click the link to see what im talking
i hope you dont bother about my c&c, your sculpts are good and i only tell how i think i would do it. keep sculpting!
PD: suddenly the text font changed :S