I've always had a complicated relationship with face-melting solos in church. Maybe you have too?
Let creativity in instrumentation ever be part of the evolving beauty of our Creator continually revealed in music, and let that creativity ever support the worshipers' voices as we glorify God in song. But let it not be executed in such a way that it detracts from a single word being proclaimed. In other words, whatever instrument you play, play in the name of Jesus (Colossians 3:17).
Without confidence, communication dies. Without confident communication, who in the world is going to follow you anywhere?
Having confidence isn't a bad thing - it's just a matter of what you have confidence in...