I need to see your feet, I can't see them but judging by the way your upper body moves they're wrong. Looks like you're flat footed and you've got no bounce at the knees, as far as I can see everything is coming from the top of your body.

Where's your target? You're Jabbing one way and crossing another.

The path of your right cross is all wrong to, it's called a cross but you don't literally punch right across your self.