My critique for this is mainly based on proportion and texture.
If you are going for a mroe cartoony look, than ignore the following completely, however, if you were going for something realistic, I suggest a bit of improvement.
Firstly, ensure that the texture-maps on the girls skin are detailed enough and accurate enough to at least look plausible (e.g. no blue lips, green skin, etc).
After the texture map has been tested on the model, try applying some sort of SSS shader.
The first iteration will look rubbish as a rule, but once you start messing around with the skin layer maps and the specularity, bump and gloss settings, you’ll find a model that looks infinitely more convincing as a human.
Other than the skin, the other textures are pretty solid and could probably stay!
The model looks good, the face looks fine, but the proportions are way off.
Firstly, the torso isn’t large enough, scale it up a bit and it’ll look a lot more convincing.
Secondly, the hands are WAY too small, make them about 1.5x the size and you’ll see a major improvement!
Thirdly, make the head a tiny bit smaller (this might not be necessary due to the torso scaling).
Overall, brilliant start! Keep up the solid work!