Right now, I'm trying to create a trick of my own. Essentially, the trick is where two coins are signed. One coin is vanished, and then the other coin is vanished. Only one coin is produced, but now both signatures appear on the faces of that singular coin. So my question is, is there a method to have the spectators sign one coin under the illusion that there are two different ones? I'm not looking for an explanation; rather I just need to be pointed in the direction to learn it.