Some interesting tips for taking better pictures (mainly about portraits). In short:

  1. Look your subject in the eye and take the photo at eye level
  2. Use a plain background
  3. Use the flash outdoors.
  4. Move in close to your subject (physically or zoom)
  5. Move the subject away from the middle
  6. Lock the focus
  7. Know the range of your flash
  8. Watch light coming from other sources
  9. Take some vertical photos
  10. Move your subjects around