Pastel sunset. I like the composition, the amount of sky that you included, but I'd like to see that bit of tree on the right gone, it's a bit distracting to me.
That's a nice sky, but to me it doesn't seem like the sky is spectacular enough to be the subject of the picture and subsequently it feels like it's a nice backdrop without a subject. Now if for instance there were tiny silouettes of people on the hill that would improve the picture considerably. Hope that helps.