This sunset was beautiful, but it was not a huge dramatic show. So, I used the distant mountain as a base for the image and then aligned a tree to fill the more-clear area of the sky. The result is a simple, clean image with some nice color.
I was working with the wide-open f/1.8 image quality of this lens when this picture was captured. The focus is on the foreground tree with the distant background going only mildy blurred.