At the fast section starting from 3:15 you should try to take a wider entry to the corners. In 3:26 and 3:40 you're quite in the middle of the road when you enter the corners. If you went more to the right you could take the corner at a lesser angle and carry more speed.
At 4:40 for the right turn you can put your right side tyres on the curb and cut the corner slightly and this way you can get on the gas earlier and keep a straighter line. Be careful though, if you go too far on the curb and your left side tyres touch it your car will jump and you might get understeer and go wide.
Other than the small mistakes at 2:35, 5:00 and 5:20 the run is really good. I think you'll break 6:40 soon if you just keep practicing.👍
