It is a very good photo, but I think it could be improved. The sky is perfect, lovely sunset and good exposure of it. The foreground, which is the main motive here, is too dark in my opinion. Especially the blackened edge on the left side - it doesn't present anything else but blackness, and that doesn't fit a colourful landscape photo as this in my opinion. But the rest of the foreground rocks could be lit up a bit too, but it's not good to know before you actually see it. I would suggest to try. I would also suggest lighting up the left edge of the sky too, if possible.