7076: You did shoot this one at ISO 2500, which means that you needed to do a lot of noise reduction to get this level. Noise reduction, however, does not come for free. You also destroy the fine structure that is still left in the picture despite the high ISO. The exposure time is 1/1000s and as trees rarely jump out of the view, you can go down to a fairly reasonable exposure time. The background is underexposed. You also could have framed the picture in such a way, that there is less background in the view.
7475: Not only do you have that very disturbing spot in the picture, you also have a high noise level. As said above, you should really set the ISO level to the lowest possible value. Such static objects do not need that fast exposure time of 1/1300s.
Composition. You have a patch of sky in the corner, so the viewer can be distracted by this. Also when viewed at 100% the quality of the photo isn't that good. The quality has to be good for commercial use!
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