Hey Man, You sound Great and thanx for sharing it ! its a good challenge to play just with a bass and still think that sounds perfect ! i have a quick question : what do you hear on your headphone ? metronome ?!
sound very good! i'm new at improvising... to begin to learn, do you reccomend something like "the base note + the third + then six..." have you find you most common patterns...? I don't know where to begin to learn improvisation :S
Shurely using the chords notes starting from the first is a good work then, prorgessively you should introduce scale notes. I sugest You a good and simple metod like: “Building Walking Bass Lines” by Ed Friedland, Hal Leonard edition.