Head swapping mechanisms often require complex Redstone timing (rapid pulsers, precise repeater delays) to dispense and remove a helmet/head slot correctly.
Ensure you are playing version 0.2.999 or later, as the Halloween-themed head customization was a major feature of that specific update. lovely craft piston trap head swap
On some Android ports , the head swap may not trigger if "Auto Mode" for the piston is active too early; try manual interaction until the final stage. Community Tips for LCPT Builds lovely craft piston trap head swap
Choose any character capable of equipping headwear (often the Pumpkin Girl/Jack-o'-Lantern Girl is the target of this unlock). lovely craft piston trap head swap