Hmm, well let me be the first to critique this. I've seen most of your past work in your gallery, so I know that when it comes to portraits, I expect nothing but a great piece of art from you, though, at the same time, I do feel a little strange critiquing this, because I know that I could never produce something like this, I'm a cartoonists. But anyway, here I go.

The first thing I noticed when comparing the two images was that the shape and proportions of her face are extremely accurate. Everything from her eyes to the slight curve on her cheeks was done very well. If I had the ability to create this piece, I would:

1. Try to make the right side of her face a little darker, and lighten up the left side just a little. It would add a little more contrast.

2. I would also soften up the shadows so that the light hitting her face doesn't seem so hard. Your accuracy in lighting and shadows are great.

3. If possible, to add the freckles that are on her face, and make her hair a little more finer (I know hair can be a hard thing to draw).

Other than that, awesome piece.