Comments, ok I will give you a run-down on pointers.

1st. You can easily make any coloring more alive by adding in a few highlights. Now you don't have to go crazy just a bit there and there will really draw this out more.

Tweaking with the colors curves/balance is a great way to make unwanted skintones what your aiming for as well as lush and colorful.

2nd. The neck doesn't always have to be square on a figure. Can't stress that enough have fun not always will something always be done the same as position changes always keep in mind what your trying to achieve. Since I believe and fell your going for a stare down above perspective; I'd like to see her neck end just inside her chin on the left and go and curve down to her collar bones going upward. (several would look much better)

3rd. I like to see her hair a bit more puffy or with a brushed look. I like too see a appeal how she manipulates her hair, were it folds were it bends, how the wind treats. Doesn't have to be any of those really. (I don't mean adding in hair strains)

4th. Keep in mind colors/shadows vary to perspective if you try to color everything like a depth course you'll get a big cylinder with nothing fancy going on. I'd really like to see the shadow on the legs the one of the left be on the inside.

(Now if you didn't want that overlook skew which is tricky)
You should always remember the legs should be 35% longer or so than the arms.

The mummy wrap socks are quite interesting.

Also you can get a more emotion that really makes your picture shine tweaking the eyebrows ever so. Keeping them stiff beside each other isn't too good, specially when the face is turned, but I guess it's all style there.