no problem man...dnt sweat it...ima test out a theory i have for your effect "Pinned" using a saftey pin. and using an old trick by painting one side of the pin white an the other side not painted...so when wearing a white shirt it appears to go thru your shirt...enhancing the illuson...then do the pulling of the pin down your shirt...do the switch with the duplicate pin and actually somehow pin it..then ask the spectator to take it off the shirt.