I love to make comments as a worship leader. Comments present great opportunities to draw people's attention out of the world and into the Word. But if comments are not well formed and stated they can be distracting and have the opposite of the intended effect. Here are a few tips that I have learned about making good comments in worship.
Nothing is more distracting during a worship service then a worship leader who is tripping over his own tongue. If you got something to say then say it. But if you don't have anything to say then don't say anything. Trust your song selection and the Holy Spirit to accomplish what needs to be accomplished.