When I first tried HDR I was only taking 3 exposures but found that it wasn't enough range. Try taking more exposures and merging them. I do +/- 3 stops so I end up with 7 different exposures and find they end up looking much better
For me, It's too soft, overprocessed, and there is some weird ghosting going on in the left corner. I'd try and reprocess, because I really like the light and the composition.
Jake