Here's a brief guide I wrote to repertoire design. Perhaps that will help.
Happy Magic
Great thread there Mat, real quality read. Now all we need to do is apply it.
Now, I would also like to add something to the routining of your magic. Imagine this scenario: Magician approach the group of people, introduce himself, everything is going nicely, than he reaches into his pocket, take out a deck of cards, and perform some card transposition effect, put the cards back in the box, and than he put's the box back in his pocket. Now it all sounds nice, but not as nice as it can be. Why would you reach into your pocket and physically take a deck of cards, and then do transposition effect? If you can already do transpositions, changes, vanishes, appearances etc. why would you take a deck out of your pocket?
Why don't you produce the deck out of nowhere, and than vanish the deck at the end?
I think that also gives a lot to the magic itself. If you need to reach into your pocket to take the deck out (hmmm penis joke on the horizon?), and than do magic, it will look more like you are doing just tricks. But if you make the deck appear out of nowhere, and than vanish it, than the WHOLE performance looks more magical.
So think about adding appearances and vanishes at the beginning, and the end of every routine. Or make the cards change into four coins at the end of your card trick, and continue with coin effect, and then vanish all coins one by one, and walk off clean.
That is why I will start doing, and putting into my routines, because it just looks magical.