Select that one thing (among the many things) you want to do better, and start doing it right now on a regular basis.
Make it a daily practice. Do it even when you don’t want to, your to-do list is a mile long or your lack of finesse is frustrating you to no end. Just do it.
As Copyblogger Brian Clark so eloquently demonstrates below, practice is the single route to mastery. Stop thinking on it or wishing things were different, and act! Isn’t that what you urge your prospects and supporters to do?