I'm not going to say it was sloppy, since it's hitting for the most part in the correct places, since in jazz the down beats are were your accents are rather than right on the beat, I can tell you're playing ahead of it, which for jazz/funk works. Just make sure your fills in the upper parts of the neck fit though, that's were I could hear you breaking away from the beat a little.
Some suggestions: add some approach notes. In jazz improvisation, these are the most important parts. You use chromatic notes from below and scale tones from above when approaches your chord tones. These approach notes can be grace notes or part of the fills, but they really make it sound jazzy.
Also, use some upper partials (upper structure triads) to really boost the jazzy sound. You can eliminate the roots in exchange for the 9th and really pound out some #11s. Use of flat 9s, 13s and flat 13s are really good too. Don't be afraid to not play anything for a few beats too, let it breathe.
And if you can, put some stop times in the song as a whole, that's the heart of jazz. Keep swingin'.
Way sloppy, man
This was cool, but your playing was just messy. If you're going to be the bass player, you have to be the rock too. The whole band's going to collapse if you meander around the beat like this, even during an improvisation.
Do I really need to say anything at all? I mean come look at the song title and look at my username...
Please contact me if you would like to use this in a project. We can discuss the details.