I think that the horizon is a bit tilted to make the shot works and the pic has been divided at the middle, i.e. the clouds being the main focus in your shot with the rest of the elements in the pic. Try cropping and see how things turn out. Just my $0.01:embrass:
Do u think I can afford to crop some more the bottom, because after adjusting the tilt and crop off the blank part, the horizon seem to adjusted to the middle, thanks for teaching.
Thanks, DarNikon,Ahtiow, denniskee. Replaced the 2nd photo for comparion, thanks everyone for spending ur precious time to teach me. I learned a lot from you