You have ten seconds to “get” me… to make me want to listen to whatever else you have to say.

If you don’t get me in that ten seconds, then nothing else you do matters.  It’s simply human nature to decide quickly whether or not something is a waste of time.

So think about what that opening ten seconds of whatever it is you’re going to talk about is going to be BEFORE you open the mic.  No matter how good you are, this is something you can improve.