Use natural lighting if possible

When taking portraits, wear light or dark colored clothing in solid colors (patterns can be distracting)

Use shadows to create interest

Put an adult-size hat on a child for a cute portrait

Try putting kids in overalls with no shirt underneath for a cute portrait

Put a child in adult-size shoes for a cute portrait

Photograph fingers and toes

Zoom in close when taking portraits, backgrounds can be distracting

Capture all facial expressions... not only smiles