Sometimes I realize that I talk too much. For example, every couple of weeks or so I hand around a grade sheet (with student #s, not names) for them to see what they're missing or where they're currently at gradewise. Then before I hand it out I always go into my spiel about, "I'm passing around the grade sheet ... look for your zeros .... time is running out ... look quickly and pass it on ... make sure everyone in your group sees it before you ...".
Oh my goodness, I've just realized. Be quiet and just pass it around. They can figure it out. That's what I "accidently" did yesterday, and then realized that was ideal.