Prepare the Potatoes: Peel and chop mini creamer potatoes into 1-inch chunks. Boil in salted water for 15-20 minutes until fork-tender. Drain and return to the pot over low heat for 1-2 minutes to steam off moisture.
Mash & Season: Transfer warm potatoes to a mixing bowl and mash until smooth. Mix in lemon juice, olive oil, salt, pepper, onion powder, garlic powder, and smoked paprika until combined.
Sculpt Skull Shapes: Line baking sheets with parchment paper. Take about ½ cup of potato mixture per skull, shape into ovals, then detail with eye sockets and nose openings using a spoon or knife.
Bake Skulls: Preheat oven to 400°F (200°C). Lightly brush skulls with olive oil and bake for 20-30 minutes until golden brown.
Decorate & Serve: Dust with smoked paprika and garnish with optional toppings like parsley or crispy beef bits.