Sunset HDR pictures are very tricky. The yellow part of the sunset looks really big, I dont know if that is how it looked with the naked eye or if the HDR process magnified that. I dont mind this attempt, I think it is pretty good. I am assuming a regular picture would of had the beach area and boat too dark, but the HDR made those items come out pretty good IMO.
Try posting some other shots so we can see some more of your HDR work.