The young lady has near perfect lighting. The angle of the light coming from above and to one side gives the best depth of facial contours and best 3 dimensionality. The exposure is a little low - could be just a bit brighter overall.
I also acknowledge the excellent control over the background - it is unobtrusive and harmonious in color, and best of all there are no tonal merges with the hair line.
Swinging around to the left a little and having her head follow the camera would put just a little more light into the eyes and perhaps provide a catch light in the eyes.
She is beautiful and is perfectly posed.
The only thing wrong with the light is that it is too harsh. That is, it is producing some small hot spots on her right forehead, cheek and nose ridge. Those hot spots would not be quite so hot if the light were from a northern exposure. I suspect that this was direct or near direct sunlight coming through a window.
I really like this excellent portrait better than the one to the right.
The sailor is in direct sunlight, which is much, much too harsh (contrasty) - it even makes him squint. Far better would be to find open shade for outdoor portraits. There is always open shade available somewhere - you just have to consciously look for it.
You will find open shade on the north side of a building. The idea is to be shaded from the direct rays of the sun but have bright open sky above your subject. This gives the softest lighting and eliminates the deep black shadows (like those seen on his left cheek and neck.