Learn about using bow division while bowing open strings from musician Julie Artzt Becker in this Howcast video.The other think you also want to do with open strings to make sure that your sound is very sustained and even is to put the metronome on. I love practice tempo of 60 to the quarter note.Okay. So now I have the metronome on. And what I do is I try to fit four counts to 60 in one bow. So I divide the bow into quarters when I do that. One, two, three, four. One, two, three, four.Here's how it would sound. And that's four counts. You can also do two counts to 60. That would be one, two. One, two. That means your bow is going a little bit faster now.And of course you can do that on all the strings.So, that's a little introduction to playing open strings on your violin.