The macro or close up photography is a very incredible new way of seeing the subject.The smaller view can sometimes reveal more about a subject than the broader perspective.Of course its sometimes easy to miss the smaller scene within the bigger view,especially when the grand-scale scenic is so awe-inspiring.The trick to finding good detail images is to be AWARE.You will need to sloooow waaaay down and analyze your scene in order to isolate some of the phototgenic parts that make up the hole.
Depth of field
One problem with macro photography is the limited amount of sharpness in front and behind the main point of focus. This is known as depth-of-field and is very shallow at close range. This means you may, for example, get a really sharp flower stamen but the petals in front and behind will be disappointingly soft. You have several options. One method is to shoot from a distance and crop the photo later. This means you get a sharper overall subject, but the photo quality may not be as good because you have used either less pixels or less film, resulting in lower resolution or more grain. The more sensible option is to adjust the aperture, where available, selecting a smaller number which increase depth of field.
Another problem you may encounter, especially when using a camera with extremely close focusing capability is that the camera is so close to the subject that it can cast a shadow. Try to move around to a suitable viewpoint allowing the light source to continue to illuminate the subject. Flash can be used but only with cameras that have off camera facility, so the flash can be positioned away from the camera in a suitable position allowing adequate subject illumination. SLR manufacturers provide a series of dedicated guns for their SLRs and digital cameras, including ring flash that gives more even coverage at short range.