Quite a nice pose and the plain background is a good decision too, but I am afraid that this image will suffer because it simply isn't sharp in the right places. You have nice eye contact with the model but there is too little detail as the focus seems to be on the nose of the model instead.
Nice effort but focusing on the eyes is vital with portraiture.
Nice lighting & composition. 7 You might want to read this tutorial (//www.dpchallenge.com/tutorial.php?TUTORIAL_ID=26) on how to size your photos for a challenge. Some people can be pretty harsh on small photos.
Why only 300x450 (too small size)?
You're a very beautiful woman with nice eyes and georgeous lips , the portrait is good and would have look much better in a bigger size.