Print your free pumpkin template and pour some yellow and red paint onto your plate.
Colour in the stalk of your pumpkin using your green pen.
Scrunch up your foil and use it to mix the red and yellow paints together to make orange. You'll find that you need more yellow than red for this.
Use your foil to paint your pumpkin.
If you would like to make this as a Halloween craft then cut out eyes and a mouth shape from black paper or card and then glue these on to your pumpkin to make it into a Jack O'Lantern.
Notes
Instead of using a green pen to colour in the stalk of your pumpkin you could use some green paint and use the foil (or a paintbrush) to colour it.