Show the audience your coin and tell them you are going to make the coin disappear.
Place the coin in the center of your right hand with your palm facing toward you. Keep the coin secure in your palm by using your right thumb to press the coin into the fleshy part of the center of your palm. Be careful at this point not to show your audience your thumb is holding the coin.
Making it obvious to the audience, using eye movements to follow the imaginary path of the coin, pretend to throw the coin into your left hand.
Close the left hand after a few seconds as if the coin has been caught. Remember the coin will still be in the palm of the right hand.
By distracting the audience with humor or drawing attention to another part of your body, disperse of the coin in your right hand. You could do this if you were wearing a long sleeved item of clothing and sliding it into the sleeve.
Show the audience your right hand so they can see your hand no longer contains the coin.
Then as if by magic, show the audience your left hand displaying that the coin has now disappeared.