Right I would say this shot isn't showing off any real capabilities of the lens, Surely this should be posted under lighting examples?
First thing I pick up on is that the model is far too close to the background ( that shadow is plain wrong unless you are going for a fashiony ring flash look) , and the lighting is positioned badly. is this using on camera flash ? Generally for corporate portraits you'd use more Rembrant (45-60 deg) with a big softbox or even & softer more natural lighting that might consist of a soft fill just off and above one side then maybe an umbrella giving a slight cripsness and shaping from the other side. Also the background should be far enough away to be lit with another possibly gridded or softboxed head.
Is this one of your first attempts at this type of work ? One thing you have done well is making your subject look bright , happy and at ease which is for some the most difficult part of professional people photography.
What you should do is read up on corporate styles of lighting and techniques and google for the best corporate photographers and really study what they are doing with lighting, posing backgrounds and props.
Now this isn't a really bad job but is quite basic and there's many elements that need to be thought about. This could be 10x better with a little more planning and experience in lighting .
Keep on working!