For HDR you still have quite a bit of underexposed/black area in the foreground and midrange of the pic. Did you take multiple bracketed exposures? It looks like, if you did, you either needed to bracket your exposures 2 stops apart or take more pics at 1 stop (5 or more) for the HDR to capture the darkest areas. Keep shooting HDR- when you start nailing the dynamic range of a shot like this, you will fall in love with it.