I would work on breaking down every element of the image and thinking about what you like and don't like. Not just looking at it as whole.
If you can identify which elements you like you can apply that knowledge to all of your future work.The elements that you don't like you can avoid in the future. If you like the light than think about why your getting that light. Is it hitting you directly through the window, is it bounced?
What time of day is it, what time of year is it??
Why is the shadow on the left side of your face pretty open....was there a white or light wall on that side of the room bouncing light back at you filling the shadows or maybe a window giving you indirect light.
These are just a few of the questions that you should be asking yourself. Look at your answers and apply them next time you make an image.
I'm trying to give insights into how to grow on your own rather than specific criticisms about the image itself. It's all about growth.
Think about what you would have liked to achieve in this image and then maybe ask more specific question on your next post.
And play..........Play A lot, Shoot a lot.
Photoworkshop