In Flight

Hi all, I'd love some Critique on below picture - anything I can do to improve on it?

IMAGE LINK: http://img40.imageshac​k.us/i/img5022k.jpg/

As an exercise in panning, it serves a purpose. The tone is flat and it's a bit underexposed. Generally, for shots like this, leave some room in front of the moving object for it to travel into. Translated, that means that it's too centered.

It's too bad you couldn't wait for wheels up, which would have made a more dramatic shot. But the plane was probably at a distance by that time. As it is, it's not a noteworthy shot, unless someone dear was on the flight.

Some hints on post processing in here:
Airport runway shoot

Thanks will take a look