Joanna (1)

Tantalyzing pose. It makes you want to look ;)

The overall composition is very interesting. The execution is good.

There are a few nits about this picture that holds it back. Lucky, most of these nits you can fix in post.  

a) the color of the hair on the dark background don't match well

b) Hair out of control and covering her eye. I've run into ot myself a few times during portraits. It may require some edit and cloning, but it can be cleaned up.

c) Make up is a bit cheap looking. You may want to get better makeup on your models. You can still fix the makeup on this one in post, so it isn't a total loss.

d) Too much shadow on the neck area. It makes it a bit dark.

Otherwise, it is a pretty good photo! I think it will be great once you process these issues. Two thumbs up!