1 Two liter bottle
Card stock although construction paper will work
1 Schrader needle
Step 1: The Cone
Tape the base of the cone to the rocket using as little tape as possible and a strip of tape running up from the base of the cone to the tip where the paper ends.
Step 2: The Fins
Attach the fins with about an inch long strip of tape on each side at the top of the fins to the point just above where the bottle starts to curve inwards. Seen picture 3 below. One way to help space the fins out equally is to take a piece of paper and wrap it around the circumference of the bottle then take it off and fold it into thirds, marking each third. Then put it back around the bottle and mark each point.