Shave and Scoop
Use the large router tool to scoop out larger sections but don’t go all the way through the pumpkin. This leaves a thin layer of orange which light will shine through like stained glass. To smooth out the top, use a sanding tip. Whoops! Did you poke completely through the pumpkin? No worries; Test to see if it really shows. If bothersome, cover the hole with tape on the inside of the pumpkin and dab with a little orange paint.