Making good photographs does not require expensive equipment, but does require reasonable care, prior planning, and attention to detail. The first and simplest photograph that you may use in your display is an overall pictorial scene. This photograph can be the first in a series of prints or slides, or it can be the establishing scene in a video about your project. When composing an overall picture, you should consider how you will relate it to close-ups of specific details that you want to show in other photographs. Once the overall scene or site is established, move close to record the details of your experimental work.
Pictures tell the story best when they make one very obvious point.
Concentrate on that point.