I think you're displaying too many lyrics at once, in the verses of the bring me to life clip anyway. One line at a time would be much better than two, the best way to do these videos i feel, would be a word at a time, as the people sing it the words pop up and stay onscreen until the next line of the song. That's a lot more work though, but it would be more enjoyable to watch.
You definitely need a channel banner and to make some kind of appealing thumbnails too. But i'm sure if you just keep pumping out multiple videos a week the people will come.