WIP humanoid female cartoonish model (feedback appreciated)

I'm making a series of humanoid models for my game. I'm a programmer at heart so please assume I know next to nothing on the subject, any resources to improve my models or feedback of any kind would be greatly appreciated. Let me know if these shots aren't sufficient to preview it.

The model is at 1203 vertex and 1538 faces, I plan on making higher definition versions once I get the figure and proportions correct so any input along those lines would be amazing.

 

Updated the above pictures, added detail to the arms, sides and back. Face still isn't perfect but I've edited the pics below to show my current progress, I may go with something close to this as my final product and simply add armor and clothes (and modify accordingly) for my first female character.