photomanipulation

TIP
So! see one good scenary, landscape ... or something, but haven't good technology like profy photo machine, time or whatever and our shut not became what we expect.
how to turn 'otencial' good photo into better one?
edit it, enhance the luminance, hue, or even is necesary, change the sky.
For exemple used this
photo:
[link]
sky:
[link]
software: the GIMP (but you can use photoshop, photopaint or whatever)