How long have you been performing coin magic? I ask because the muscle pass strikes me as being a very advanced coin sleight and if you're fairly new to magic, why are you attempting to learn the muscle pass? I would start at the bottom and work my way up.
However, if I've got it wrong and you turn out to be a professional magician, I take it all back. My humblest apologies.
It is a nice sleight, though, and some of the effects are very impressive to watch (I like the coin through window one).
