Trim down that Turner's Syndrome neck down and give her a itty bitty animu nose, that'll fix it right up. Also, drawing facial features on a colorful painting in black is jarring and dirty looking. Use a darker, more saturated color instead. I'm not a painter either (less of one actually, I really haven't done a lot of painting or rendering before) but that's what I always hear painters tell beginners.You don't have to do an animu nose either, but a normal nose sticks out a bit more. The one you had on her was a flat pug nose or the nose of a baby.
Other than that, though, it's really nice. The color palette looks hella nice, and the proportions and shapes of her face, eyes, and mouth are pretty spot-on. Good job.