uLearn.Photography - part of FilmPhotoAcademy.com
OK, I understand it is unlikely that you are going to be able to shoot at a wedding in the next few days.  So we're going to approach this assignment differently.
Get on the web and find wedding photographers in your area.   
Have a good look at their website portfolios
I want you to really look at the pictures they have chosen to show.
Are they good pictures?
  • Do they use good composition?
  • Have they used good lighting?
  • Have they used good poses?
  • Are the images clean with no distractions?
  • Do the images have impact?
  • Do they use colour or monochrome or both?
  • What types of shots have they chosen (groups, couple, details)?
  • Would you hire them?