Great use of minimalist style.
You seem to have a good thing going for you with your art style and aesthetic. It has a very clean, easy-on-the-eyes look to it, and I very much like the contrast of colours and detail between the main figure and the background.
THAT SAID, I think you might want to look into how you do lighting effects. I feel like a bit more shine to it would do wonders to the crispness of it. Also, I'm not particularly fond of the four little dots you used for her hair shading. I just feel that hair is the one place that you should spend extra time on lighting and shine effects, particularly in this kind of art style. I would personally suggest you try looking at some other artists who have similar sorts of art styles and see check how they do with hair effects. I could link you a few artists for reference, if you ever become so interested. Also, I feel like a few other places, like her leather armour, could have used some very light shine to make her whole figure pop out a bit more.
With that said, I'm very much liking your posing and expression you gave her. You do a good job of speaking about her personality through her body language, and that's a talent certainly worth noting.