the eyes, nose, and hair are a lot better in the after. The mouth is more realistic, but changes the whole expression on her face... in a good way i think. i think you have very much improved. Great job!!
The throat looked more realistic in the first, though I do get the feeling you were a bit quick with your strokes on the second one when I look at the chin. The shading seems to have been a bit better on the first as well-- just more realistic and less airbrushed.
You're definitely correct about my strokes being faster on the chin, and as for the shading, I just felt like it was to harsh in the first one so I tried to make it softer, but I see what you're saying