Yes well done, I like effects best when they enhance a picture but don't draw attention to themselves.
Just curious ... with three images one stop apart, you basically have a middle exposure and extend the highlights and shadows by one stop. Couldn't you achieve the same with just two images two stops apart? There would still be a huge overlap in the dynamic range of the two images, even if they were 4 stops apart. I've never done HDR so maybe I'm missing something?