I've been busy so didn't see this picture until today. I can't see where you've over-done it at all, at least not looking at it on a not very good monitor at work. In fact, some people who do like the more artistic HDR renditions would dismiss yours as being too realistic. So don't go getting a big head about it - it's not processed enough, it's too natural looking. It looks just like you were standing there, it's how your brain would interpret the scene. So I'm sure there's someone, somewhere, who would say it's not good enough, that the HDR program you used let you down.
I, on the other hand, am SO envious this isn't my picture, it's everything I try to do/capture with HDR.