Have one subject from multiple angles in each photo.

Always take more than one photo of a subject, especially insects.

Look for unique characteristics of any subject. Anything unique will help with identification.

If you are using a cell phone, make sure you turn your flash on. This will help decrease shadows and increase edge definition.

Remember, the closer you get to a subject, the less that will be in focus (limited depth of field).

When photographing fungi, make sure you also get a photo of the underneath part of the cap.

When photographing trees, photos of the bark, leaves and branching pattern are helpful.

With bees, make sure you photograph a view of the abdomen patterning. This is very important with bumble bees.

With butterflies, both sides of the wings are important in determining identification.