The effect you have captured well in your landscape shot and in the one in the book is the use of leading lines (vanishing perspective) to pull the eye of the viewer deep into the picture. Although an image is two dimensional (flat), you can make it look more 3D by doing exactly what you did in your image. You included a foreground object (the jeep) that provides an anchor point for the image. Something up close to judge distances. Then you have given us a road that is wide up close and gradually recedes into the distance, getting narrower and narrower as it recedes. The road seems to go under the clouds as it fades into infinity, so the clouds have depth.
You have figured this out on your own. Adding depth requires two things:
1. A foreground object. 2. Vanishing perspective.
You have captured both quite well in your interesting image. It tells a story. It is a success!
============================================== Darrell Young (DigitalDarrell) www.pictureandpen.com "Better too many words than not enough understanding." ==============================================