This photo has potential to be very nice. It appears to be over adjusted on my screen leaving it with a very unnatural look, dcp voters don't tend to like that so I think you will suffer because of it. I have not checked but it feels like the image is lower on the right hand side so maybe it needs straightening as well. Nice choice of shot!
DPC is certainly the place to look sharp. Anyone who has been here very long understands that an image has to be sharp sharp sharp not to get trashed in the scoring. I don't know what editing techniques were actually used here, but I have the impression that there was quite a bit of sharpening. My impression is that this is the first time I have seen a picture of oversharpened clouds. It grabs my attention but it looks far too unnatural. As part of a workflow that would end in some paint effect, perhaps this level of sharpening might be a good idea. Finally, I think ignoring the rule of thirds on the horizontal axis hurt the photo a bit.