Nothing to say about the drink, so you can delete this comment later, but you need to re-order your directions so that number two is last
I have noted this on some other drinks as well
It is good practice to prepare your garnish ahead of making the cocktail so the cocktail is served as freshly made as possible. Hence, I've always put the garnish before the method. However, we're in the process of changing from garnish, followed by one-line methods to steps. While I work my way through 6,000 cocktails, as a first stage, we've added "prepare" in front of the existing garnish instruction. As you say, adding a garnish instruction as the last step will follow.
I have noted this on some other drinks as well