Block off a circle for the hedgehog's face with painters tape or masking tape. This will help you determine the size of your felt pieces as well as keep the candy corn in a circle around the face.
Cut eyes, cheeks and a nose out of felt. Our eyes and cheeks are about the size of a dime, but you may need to adjust their size depending on how large your pumpkin is; if you're not sure, start larger and trim until you like the look.
Add a small bead of hot glue to the base of the candy corn; attach candy corn to pumpkin so that the widest part faces the face. Too much hot glue will make the candy corn slide down on the pumpkin, leaving exposed glue, so be careful to only add a small amount. Continue this process around the face; once you've completed the circle, remove the tape.
Continue adding candy corn to the entire pumpkin, leaving 1/4 inch between each candy corn. To make sure the candy corn doesn't form straight lines, start building around the circle around the face. Add candy corn in each 'window' and continue all the way around, varying the direction that each candy corn faces. Continue adding candy corn until the entire pumpkin is covered, leaving only the bottom free so that your hedgehog can easily sit on the front porch!