Good hand speed, but technique can improve. Footwork needs help, I noticed you "hopped" and took 2 big steps to get from one side of the bag to another, a good fighter can catch you while you're doing that hop and throw you off balance easily, in a real fight you usually don't have to go from one side of an opponent to another, try turning at a 90 degree angle, throw a few punches, then go to the other side. You were also thrown off balance with your flurries, this might be cool for a bar fight but in the ring it's a different game. A bag is never gonna hit you back so for now you can do whatever you want but remember it's not gonna matter much in the ring.