I have a dumb question, but why do all of these model examples never show the sketch layer? In order to model well, you must either be able to take from a life capture or draw the base yourself... Very rarely do I even see professional modelers be able to just make a model out of thin air.
Let me give you an example...
Here is a model I'm working on for a completely different thing.
As you can see, my drawing behind the model helps guide the geometry of the character. In the end I can make WIP models that look like this...
Something bugging me about the models. Something about them feels "prefab", but I can't put my finger on in. I mean, I do things like vertex weighting so that clothes fall properly, like this
for example... Now I'm not asking to be all complex, but these models scream IKEA for some reason. I can't put my finger on it, but I think I've seen this prefab before.... The models seemed to be mirrored, bit it's not lined up on a grid point I only bring this up because your model proportions look way off, but there isn't any guide I can see to correct that. The lips and face geometry don't match any known rendering of Aerith I know of, and a is very consistent between different models.
The body doesn't seem quite 7 heads high, and are squished in places. You need to move the hips down to a somewhat human position You have them near the elbow. You need to move her legs/feet to under her center of gravity and move the arms back to that you can get a good posture for the animation armature. She is also missing the "junk in the trunk" if you know what I mean.
This might help.
Also UV map a drawing of the face you are going to be putting on the character. That would help a lot.