Lovely peaceful composition Ray. I don't think the rock is bad per se, I think it is just that it is so dark. So, I thought I'd have a look to see what detail was available but there wasn't much so I have created some myself. This gives the rock more interest and doesn't darken the picture as much. The horizon was 1 degree out which doesn't always matter in cases like this as the horizon meets land and not sky but I do think it looks better straightened so I have done that as well.
When adding detail into the rock I used the obvious cloning technique BUT if I had just used what was there as is, it would have shown obvious repeating patterns. I avoided this by doing a couple of things: first is to change the source point regularly and work in very small stages. The other is something a lot of people don't think to do: I copied the rock to a new layer, rotated it and used it as the source point to copy detail across. I rotated the rock a couple of times as well. Because the detail is now in different directions, you won't notice any repeating patterns so it looks more natural :o)
The reflection of the rock is very low as you have cropped it so tight but I did add a bit of detail into the reflection as well just to give it a lift. I finally adjusted the colour balance to try and remove the yellowy part of the sky (did you do some burning in?) and the green colourcast. It isn't perfect but I think it is better.
Ok, see what you think
Cheers,
Rob