“Doubt thou the stars are fire;
Doubt that the sun doth move;
Doubt truth to be a liar;
But never doubt I love.”
If you want to learn the proper way to shoot sunsets or dramatic shadow pictures the web is filled with tons of websites, but for the most part it's all about the eye, bracket for the shadow and see what you get.
Here are some I took...
Some good points:
Tripod – If you’re shooting at longer shutters speeds and with longer focal lengths then a tripod or some other way of ensuring your camera is completely still is essential.
Manual Focus – sometimes when shooting in extreme lighting conditions some cameras can have trouble focussing. If this is the case for your camera consider switching to manual focus to ensure you get nice crisp shots.
Look around you – The wonderful thing about sunsets is that they not only create wonderful colors in the sky in front of you but they also can cast a beautiful golden light that is wonderful for other types of photography. As the sunset progresses keep an eye on other opportunities for shots around you (not just in front of you). You might find a great opportunity for a portrait, landscape shot, macro shot etc behind you in the colden light.
Keep Shooting – A sunset or sunrise constantly changes over time and can produce great colors well after the sun goes down or appears so keep shooting at different exposures and focal lengths as I’ve mentioned above until you’re sure it’s all over.