I really don't consider myself a bass player yet but will be one some day. I've been trained on piano all my life though and just wanted to pass on some advice that I learned from my teachers along the way that translates to every instrument. I own and run a recording studio and see people trying to do things on their instrument that had they spent a little time practicing it slow and clean, would have come out way better. Everyone likes to play what they hear in their head up to speed and I'm no exception. But... The slower you practice, the better you play fast. Peace.