[header] How to become an astronomy teacher [title] Develop your own love for astronomy. [step] Although astronomy, by its nature, is a fascinating science, you need to discover and develop this fascination for yourself before you can teach it to others. It is helpful to develop a love for astronomy as early in your life as you can, although it can also be a love you discover in early adulthood or later in life. 
There are several ways you can nurture this fascination for yourself at any age. [substeps] Studying the night sky for yourself is the surest way to discover the wonders of the universe.