The uneven surface of a pumpkin poses a challenge to any carver trying to follow a stenciled design. Smooth out the process with three simple materials: tape, thumbtacks, and baby powder. Use tape to attach your stencil to the pumpkin, and then poke tiny holes along the outlines with pins or thumbtacks. Remove the stencil and sprinkle baby powder over the pumpkin’s surface. The white powder will fill in the tiny holes, making them easier to see while carving.