Use a close foreground object or a person to create the illusion of depth in your photograph. This can also give scale to your photograph.
Read your manual, maybe read it again and keep it handy. Get comfortable with your camera before that “special moment” arrives. Today’s cameras are too complex to “know it all”. Practice – practice – practice.
Whenever possible, keep the light source behind you and falling on the FACE of your subject. Use sidelighting to emphasize depth, dimension or texture or backlighting to emphasize shape, form or drama.