Other than noting the slight tilt, I think this is a really good photo! You blended the exposures very naturally. And you got lucky with the light and clouds. Impressive capture!
When I saw the title “Ross Castle” I thought to myself “not another one” and almost didn’t bother to look. Living in Kerry, everybody around here has their own Ross Castle image. This, however, stands out. Great colours and sky and the HDR was handled perfectly. Excellent image (once you straighten it a bit).