Why does my kitten misbehave all the time?

My new kitten is 4 months old, and she is terrible. Everyday the trash gets knocked over, she steals food off my plate when i'm not looking, she beats up my other 2 cats, attacks my feet all the time, and claws and scratches my face when i am trying to sleep. my other two cats never behaved this way. why does she act like this, and what can i do to improve her behavior?