HDR Working well here to bring out the colours and punch the scene to a new level. Like the use of HDR in this way. I would have maybe cropped off a bit at the top to have the focus more on the main scene and thereby having this a pano format with black border to help the focus. Thats just me. :)
I'm not sure what to say, here, technics of this real good, a bit strong HDR but not distractingly so maybe the colours are too bright maybe the composition isn't right, not my favourite picture of the challenge