Use the chalk to outline where you want your decorations to go.
Make the mouth first, as this is the most difficult, and most intricate. Use the rubies for the lips, pearls for teeth. It's best to use oval pearls to make the fangs.
Hot glue the larger pieces, the eyes, nose, and eyebrows.
Put rhinestone strips in the ribs of the pumpkin. You should count about how many ribs the pumpkin has so you know how many strips you need. You may also want to hot glue the rhinestones on so they will last longer.
Put more rhinestones and pearls on the pumpkin's stem.
Artfully arrange the leaves around the sides of the pumpkin, then hot glue to tack them in place.
Place a pumpkin on a bed of more black autumn leaves, and you're done!