It's Ok. But i'll bet it is possible to do a selection on the sky and get some color in it. If you can do a selection on the sky somehow you can pump up the blue channel and the saturation. That's something I would do. I don't like white skies. But it is a choice and this works as is.
its just a tree. on its own i'd brighten it and saturate it no more than 20%. i'd increase yellow and red with selective color. but it's not all that sharp up close, i'd re-take it and add some content to make it special.
