Sounds pretty good, but is missing the strong melody that may be good to have for a strong solo bass statement. Without it, it sounds like pretty cool basslines and accompanyment just waiting for the melody- whether it be a vocal, horn, or even another bass.
Seems like the strings are buzzing against the fretboard a bit or you're digging in a lot, but that's a relatively minor technical issue. Then again some like a touch of fret buzz. Nothing wrong with that either, I guess.
Good job. Now add the melody!
