Nice, simple composition. Would really be great if the sky had been brought out a bit more.. can hardly make out the clouds (or maybe crop out more of the right side).
Very well done. Just the right amount of prcessing to bring out the multitude of colors. I'm not sure it's a first place photo, but it should do very well.
nice composition and certainly meets the challenge, makes me wonder what the whole castle looks like and if it would be better if more of it were in your image. a good find