>>1481282When further looking at your vector, you really need to do something about your line consistency and pointy edges. I highlighted a couple I could find easily, but I'm sure there is more to improve than just that.
Try to make the lines as thick as necessary and not any more. Her chin for is extremely thick where as the other lines are either thinner or all over the place. Try to be as consistent as possible and take all the time in the world for it, a good vector wasn't build in a day.