*applauds Shade*. I agree with him on everything, though I'd like to add a few things about the second one.

First of all, careful where the neck attaches to the head; it should attach towards the back. More specifically, in angles more complex than a frontal view, try thinking of the head as two separate parts: the skull and the jaw. The neck muscles flow smoothly into the skull, but the jaw is sort of attached onto the front, making the point of the chin stick out forwards. This picture shows the basic anatomy of how the neck attaches to the head:

So, in other words, her neck should flow a bit more into the back of her head, while her chin should be a bit to the right of her neck. You might want to make her chin smaller, too (the distance between her lower lip and the bottom of her head is much less in the other picture).
Her lower body looks kind of strange, but I think that's mostly due to it being shaded with the same color a the background. I can, however, point out that her lower legs are very tube-like and have no real gastrocnemius (fun word!). And yeah, the ghost turned out spectacularly spectral.

Overall, you're definitely improving. Go you!