How to improve your photo
Warm the skin tones up a bit. Try a different WB preset, like "shade" or "flash."
Get your light off the camera axis, whether by using directional ambient, moving the flash off camera to the left, or bouncing the flash from the left. If you get the light coming in from the side then you'll get shaping and contouring of the face, and the shadow to the right/back side will add drama and intensity.
Get the hand out of the way. Being so light, it competes for attention. Remember that the eyes are drawn to the lightest part of an image, and even on the edge of the frame this is right up front.
Don't be afraid to "style" the hair. The wisp going over her right shoulder (at left) is distracting. Pull it down in line with the stripes of her shirt will eliminate the distraction and provide leading lines to her face. :-)