A great place to see carved pumpkins is at the annual Pumpkin Festival in Keene, New Hampshire, where close to 30,000 pumpkins are displayed downtown. Both these videos (official & amateur) view fairly well in full-screen mode.
Points of interest: those pumpkins displayed on the ground and on wooden racks are lit with candles. Those on the 3-story tower in the town square, and on other scaffolding around town, are drilled for 7W electric bulbs for ease of lighting. The gazebo shown below is where our 2 best gay friends were legally married, Keene being their vacation home.
At the end of the festival many pumpkins are smashed in the streets, and cleaned up by the next day using construction equipment, to be used as fertilizer and cattle feed. For this reason pumpkin entries must contain natural, non-toxic and edible materials. My partner & I have spent some time in Keene, and met some of these people featured in the video.
I never saw this "skinning" method of pumpkin carving, creating a relief image, until a few years ago. And the deeper the impression, the lighter that area appears, with the shallower areas darker. For special highlights a complete perforation is made, like on this "Death Star." This method is gaining popularity at the Keene Pumpkin Festival featured above, although some "traditionalists" still insist on the classic full-carved look.