I really like how the land is breaking the two "oranges" up. It seems a little "blocky" going down the horizon on the right I'm not sure it is a compression or focus issue, because i have had shots do that on diagonal lines when the shot was full size and well focused. If you figure out what causes it, let me know!!
very pretty shot, though on my monitor it does look more red (primary) than orange, but will assume it is just a problem on my side.
Unfortunately where your shot does fall down is the amount of compression you have used in saving it. Your pic is allowed to have a file size of 150KB, where as yours is 26KB. This has caused the jaggies you see on the hill just bellow the usn (there is also some on other parts of the hill)..
Then you also have those funny circular lines in the sky - also due to the same reason (and would also assume that you have used a polarised filter - cause that is when I see them on my shots).