Hi- A pretty good portrait but there are a few things that should of been removed and a few thing that should of been added to make your shot work better IMO.
For example the first thing I noticed when I opened up your image was that you are hand holding the camera not using a tripod. That's ok but should not jump out at the viewer. If you would of cropped the right side I believe that would of help this issue but a tripod would of been the best giving you more range in your setup.
In a portrait photograph where the face is shown I believe the eyes are the key to success. Both people in your photograph have there eyes very dark not giving us a connection with them like it would of been if we were able to see the eyes. I would have suggested the eyes being brighter so we could see what direction they were looking.
The female has a very pleasant smile and very photogenic so more detail and contrast would of been great. I also believe a tighter crop may have helped.
You did a good job converting to B&W and the Dof is good.
Overall I think this shot would of been worth taking again with a tripod. Using the same B&W conversion but with a little more contrast. Do away with anything that does not enhance the shot and draw our attention to the elements that make the shot. Good photograph and I hope you find this critique helpful. If you have any questions concerning this critique feel free to contact me.
LOL Are you trying to imply that she has nothing between her ears? Just kiding. This is an OK portrait but needs something. I think it's the low contrast lighting...
TC