Memorize the songs. This is one I firmly believe in, primarily for the worship leader. If you have memorized the song, you are free in worship to look at the congregation, the team, and to hear the gentle whispering of the Spirit. It is too mechanical otherwise. After you have memorized it, play it over and over again without the chart, and try to do that each day until you are going to use it.
Distraction hinders congregational worship, and good, smooth flowing music facilitates it.
Use the instrument you lead with often in your personal times of worship. Let the sound of the system become familiar. It all helps. Listen to the quality of your instrument. Make small musical steps in your playing week to week.