How to make a simple rocket.

Hi all,This is a blog on how to make a very simple rocket!
                                                                                  
Steps on how to make a rocket.                                                                   3)Stick the fins on
1)Any 2 litre bottle.
                                                  
2)Decide on the number of fins you want on your rocket(i would use 3),make sure the fins have flaps.                                                                                                                                                                                                                                                                                                                                                                                      4)Then create a cone for your rocket