You will need:
A large round balloon
Newspaper
Scissors
Orange tissue paper
Black marker
1/2 Cup Flour 
2 1/2 Cups water
Dish to mix up flour and water

Instructions:

Glue: Mix 1/2 cup of flour into 1/2 cup of water. Stir into 2 cups of boiling water. Simmer for about 3 minutes, then cool. (Have a parent do this)

Tear newspaper into 1 inch wide strips.

Blow up and tie the balloon.

Dip the strips of newspaper in the glue and wrap them around the balloon. Cover the balloon with at least three layers of stips. If you want it to be orange use orange tissue paper or another orange paper for the last layers.

Let Dry.

Pop the balloon and throw the balloon away.

If you wish the pumpkin to sit flat, then put a damp cloth on the bottom of it until it softens and sits flat then let it sit a few hours to dry.

Place eys, nose and a mouth on it with a black marker or cut them out.

You can fill your pumpkin with candy by inserting a hole large enough to fill it if you wish.  This could also be used as a pinata.

Print the craft instructions