I shall tell you my methods of taking good close up and macro photos using my fixed lens point and shoot camera.
The picture shows a test shot taken using the "macro" setting on the camera. Objects close to the camera are blurred, those at the right distance can be seen clearly and then, further out, they are blurry again.
The trick is to get your camera - to object distance at this sweet spot every time.
Step 1: Carry Around a Distance Mark
If you look closely at the previous photograph, you will note that the markings on the scale are sharpest at one particular point. That is the point at which the camera focuses when put into "macro" mode. The photos below show my solution to this: I have put a white piece of tape on the wrist strap of the camera, at the point where the macro focus point lies.
Then, while taking a closeup photo, I hold the camera with one hand, stretch the strap with the other and place the object at the mark on the strap. This way, macro photographs turn out to be sharp every time.
The camera does have an LCD screen. This is not very helpful for focusing, since the image is very small, and apt to get washed out in bright light outdoors.