I painted this same scene, years ago, in Colorado, from life, here. I guess I took a photo, because I found it yesterday and decided to give it another go. I didn't look at the old painting until I finished. What's amazing are the similarities!
Here's another peek inside my book. -> This page is about using a viewfinder. I'm amazed at how many workshops I've taken from people who don't use one at all. Crazy.