A lot of us see the selective colour thing as something that's been over done. It is a personal thing though so if you like it, print it, visitors to your office may not be so underwhelmed as us hardened photographers.
The reality of this image is that you have a very busy background and if not for that, it would be a nice picture even in full colour. Setting the background to greyscale has neutralised it to an extent but the elements that make it busy are still there.
As for having much to learn, we all do and we learn more from the ones that got away than from the good ones.