What you'll need:
Paint samples in various oranges and greens (you can get these for free in most home improvement stores or Wal Mart)
Scissors or a box cutter
Draw a pumpkin shape on a piece of cardboard. I drew mine as a circle with a somewhat flat top and bottom. Don't forget to draw a stem.
Cut out the pumpkin using scissors or a box cutter.
Take your paint samples and cut them into different shapes. Try to cut up at least 15 samples, but you may need more or less depending on how big your pumpkin is.
Using a paintbrush, spread glue all over your pumpkin.
Glue your paint sample pieces to the cardboard. Don't worry about what colors go where--just place them randomly, making sure to overlap. Some of the pieces may curl up. You can try to press them down, or just leave them to give the piece dimension.
In a solo cup, mix some glue with a bit of water until the glue thins out a bit. The mixture should be pourable, but not too thin.
Pour the mixture over your pumpkin, spreading it around with your brush. Make sure to cover every bit of the pumpkin.
Let the glue dry, then hang your pumpkin on the wall or a door.
This piece is perfect for Halloween, but can also be left up all season. For a more "Halloween-y" feel, cut up dark colored samples and make a Jack-o-lantern face. You can also use dark colored samples to make bats and black cats.