not bad at all...
Thats nice and all, which is the fact I'm giving you the 9, because it has nice buildups and generally I wouldn't change it too much, just a few volume adjustments and stuff like that, but I must tell you that in case you're using this bassline, which had pretty much all the variations it could have, you should thing "out of the box" to make it sound like something new because people listening to it will probably say "HEY! I've heared this 1 somewhere already!".
It's also a lil bit generic, all the leads have the same patter, try making em a lil bit more variated. I'd say that's all for now, can't think of anything else to point out atm. Still a good job!