i like it, this is the kind of thing I'm always playing about with while playing poker.
try showing a coin in your left hand as you press it through your right.
sure you can figure out how thats done, but PM me if needs be
You may wish to try this variation which I have found very deceptive. Instead of placing the coin from one hand into the other leave it in one hand which remains flat. Bring the other over and "take" it.
I don't want to give away the secret here but I think you will know what I mean. Finish the penetration in the usual way.
If the timing and simulation are practiced you will find this a very effective penetration.