Photo composition is a subjective decision, but there are some general guidelines that can help you. Wildlife photographer, Dave Welling, gives some tips on how to best align your photos to give them interesting dimension.
When photographing small subjects like butterflies, you need to adjust your aperture settings for good macro images. Using the depth-of-field preview button will help you see what elements of the photo you are focusing on, so you can adjust your settings accordingly.
Wildlife rescue facilities can provide photographers with the chance to document multiple stages in an animal’s life. By doing this, you can development many useful skills that are transferable to field photography.