Not all images require a foreground (especially when using telephotos in your landscapes). Not all images require a background (we sometime deliberately blur the background). Not all images need a foreground, middle-ground, and a background all in one image. When you find an opportunity to get a good foreground with a good middle-ground and a good background that compliment each other it can be a really good thing.

          When a foreground compliments a middle-ground the viewer's eyes are pulled from the foreground to the middle-ground, right into your image which is what we want. When the middle-ground compliments the background the viewer's eyes once again gets pulled further into the image which is great. When all three "grounds" work together like that it creates depth. We want the viewer to be transported into the image; we want it to seem as though they are there looking at the scene instead of looking at a flat screen or print.

Here we have our foreground of green plants and white flowers. The viewer's attention is drawn there right from the get go. Then we have the rocks in the ocean that lures the viewer deeper into the image. Then way in the distance there are some "God-rays" that beg for the viewer's attention. Our goal is to have the viewer start at the bottom of the image then to study the middle-ground, then to go to the distant background AND then come right back to the foreground to start the viewing experience all over again.

          Having a definite foreground, middle-ground, and background can really help to create depth. Try to find images that are strong in each area.