Asha Greyjoy and my dabblings with colors

I don't know exactly why, but colors and I do not get along :( This is a second try to draw Asha Greyjoy, from A song of Fire and Ice, in digital colors. In my first one, I used just plain tones and got no volumes. I've tried to improve that in this one, but still, I'm not totally in with the effect ..Luckily, I still got the hang on quick sketching :)